diff --git a/apps/api/src/api/services/phases/mykobo-eur-offramp.integration.test.ts b/apps/api/src/api/services/phases/mykobo-eur-offramp.integration.test.ts
index ad97c5de7..ad1862dd5 100644
--- a/apps/api/src/api/services/phases/mykobo-eur-offramp.integration.test.ts
+++ b/apps/api/src/api/services/phases/mykobo-eur-offramp.integration.test.ts
@@ -1,9 +1,39 @@
-import { describe, expect, it, mock } from "bun:test";
+import {describe, expect, it, mock} from "bun:test";
 import fs from "node:fs";
 import path from "node:path";
 import Big from "big.js";
-import { Keyring } from "@polkadot/api";
-import { mnemonicGenerate } from "@polkadot/util-crypto";
+import {Keyring} from "@polkadot/api";
+import {mnemonicGenerate} from "@polkadot/util-crypto";
+import httpStatus from "http-status";
+import {
+  AccountMeta,
+  BrlaApiService,
+  DestinationType,
+  EPaymentMethod,
+  EphemeralAccount,
+  EphemeralAccountType,
+  EvmToken,
+  FiatToken,
+  MYKOBO_ACCESS_KEY,
+  MYKOBO_BASE_URL,
+  MYKOBO_SECRET_KEY,
+  MykoboApiService,
+  MykoboCurrency,
+  MykoboFeeKind,
+  MykoboTransactionStatus,
+  MykoboTransactionType,
+  Networks,
+  RampDirection,
+  RegisterRampRequest
+} from "@vortexfi/shared";
+import {Transaction, UpdateOptions} from "sequelize";
+import {config} from "../../../config/vars";
+import QuoteTicket, {QuoteTicketAttributes, QuoteTicketCreationAttributes} from "../../../models/quoteTicket.model";
+import RampState, {RampStateAttributes, RampStateCreationAttributes} from "../../../models/rampState.model";
+import {APIError} from "../../errors/api-error";
+import RampRecoveryWorker from "../../workers/ramp-recovery.worker";
+import {QuoteService} from "../quote";
+import {RampService} from "../ramp/ramp.service";
 
 // Mock the EVM Nabla swap quote function before importing QuoteService so the
 // quote engine does not hit Base RPC for the (currently illiquid) USDC<->EURC pool.
@@ -28,35 +58,6 @@ mock.module("../quote/core/nabla", () => {
     }
   };
 });
-import {
-  AccountMeta,
-  BrlaApiService,
-  DestinationType,
-  EPaymentMethod,
-  EphemeralAccount,
-  EphemeralAccountType,
-  EvmToken,
-  FiatToken,
-  MYKOBO_ACCESS_KEY,
-  MYKOBO_BASE_URL,
-  MYKOBO_SECRET_KEY,
-  MykoboApiService,
-  MykoboCurrency,
-  MykoboFeeKind,
-  MykoboTransactionStatus,
-  MykoboTransactionType,
-  Networks,
-  RampDirection,
-  RegisterRampRequest
-} from "@vortexfi/shared";
-import { UpdateOptions } from "sequelize";
-import QuoteTicket, { QuoteTicketAttributes, QuoteTicketCreationAttributes } from "../../../models/quoteTicket.model";
-import RampState, { RampStateAttributes, RampStateCreationAttributes } from "../../../models/rampState.model";
-import RampRecoveryWorker from "../../workers/ramp-recovery.worker";
-import { QuoteService } from "../quote";
-import { RampService } from "../ramp/ramp.service";
-import registerPhaseHandlers from "./register-handlers";
-import { StateMetadata } from "./meta-state-types";
 
 const EVM_TESTING_ADDRESS = "0x30a300612ab372CC73e53ffE87fB73d62Ed68Da3";
 const EVM_DESTINATION_ADDRESS = "0x7ba99e99bc669b3508aff9cc0a898e869459f877";
@@ -265,21 +266,35 @@ describe("Mykobo EUR offramp contract test (real sandbox, no on-chain submission
     expect(Number(quoteTicket.metadata.nablaSwapEvm?.outputAmountDecimal)).toBeGreaterThan(0);
   });
 
-  it("registers a Base+USDC ramp and prepares the Mykobo phase set (no squid, no broadcast)", async () => {
-    const rampService = new RampService();
-    const quoteService = new QuoteService();
-
-    registerPhaseHandlers();
-
-    const quote = await quoteService.createQuote({
+  it("rejects Base USDC->EUR offramp registration while EUR ramps are disabled", async () => {
+    const rampService = new RampService() as RampService & {
+      withTransaction: <T>(callback: (transaction: Transaction) => Promise<T>) => Promise<T>;
+    };
+    rampService.withTransaction = async callback => callback({} as Transaction);
+
+    quoteTicket = {
+      apiKey: null,
+      countryCode: null,
+      createdAt: new Date(),
+      expiresAt: new Date(Date.now() + 10 * 60 * 1000),
+      flowVariant: config.flowVariant,
       from: Networks.Base as DestinationType,
+      id: "test-disabled-eur-offramp-quote-id",
       inputAmount: TEST_INPUT_AMOUNT,
       inputCurrency: EvmToken.USDC,
+      metadata: {},
       network: Networks.Base,
+      outputAmount: "32.20",
       outputCurrency: FiatToken.EURC,
+      partnerId: null,
+      paymentMethod: EPaymentMethod.SEPA,
+      pricingPartnerId: null,
       rampType: RampDirection.SELL,
-      to: EPaymentMethod.SEPA as DestinationType
-    });
+      status: "pending",
+      to: EPaymentMethod.SEPA as DestinationType,
+      updatedAt: new Date(),
+      userId: null
+    } as QuoteTicket;
 
     const additionalData: RegisterRampRequest["additionalData"] = {
       destinationAddress: EVM_DESTINATION_ADDRESS,
@@ -288,44 +303,17 @@ describe("Mykobo EUR offramp contract test (real sandbox, no on-chain submission
       walletAddress: EVM_TESTING_ADDRESS
     };
 
-    const registered = await rampService.registerRamp({
-      additionalData,
-      quoteId: quote.id,
-      signingAccounts: testSigningAccountsMeta
-    });
-
-    if (!registered.unsignedTxs) {
-      throw new Error("Expected registerRamp to return unsigned transactions");
+    try {
+      await rampService.registerRamp({
+        additionalData,
+        quoteId: quoteTicket.id,
+        signingAccounts: testSigningAccountsMeta
+      });
+      throw new Error("expected rejection");
+    } catch (err) {
+      expect(err).toBeInstanceOf(APIError);
+      expect((err as APIError).status).toBe(httpStatus.SERVICE_UNAVAILABLE);
+      expect((err as APIError).message).toBe("EUR ramps are currently disabled");
     }
-
-    const phases = registered.unsignedTxs.map(tx => tx.phase);
-    console.log("Prepared phases:", phases);
-
-    expect(phases).not.toContain("squidRouterApprove");
-    expect(phases).not.toContain("squidRouterSwap");
-    expect(phases).toContain("nablaApprove");
-    expect(phases).toContain("nablaSwap");
-    expect(phases).toContain("mykoboPayoutOnBase");
-    expect(phases).toContain("baseCleanupUsdc");
-    expect(phases).toContain("baseCleanupEurc");
-    expect(phases).toContain("baseCleanupAxlUsdc");
-
-    const state = rampState.state as StateMetadata;
-    expect(state.mykoboEmail).toBe(TEST_EMAIL);
-    expect(state.mykoboTransactionId).toBeTruthy();
-    expect(state.mykoboReceivablesAddress).toMatch(EVM_ADDRESS_REGEX);
-    expect(state.mykoboTransactionReference).toBeTruthy();
-    expect(state.evmEphemeralAddress).toBe(testSigningAccounts.EVM.address);
-    console.log("StateMeta (Mykobo fields):", {
-      mykoboEmail: state.mykoboEmail,
-      mykoboReceivablesAddress: state.mykoboReceivablesAddress,
-      mykoboTransactionId: state.mykoboTransactionId,
-      mykoboTransactionReference: state.mykoboTransactionReference
-    });
-
-    const payoutTx = registered.unsignedTxs.find(tx => tx.phase === "mykoboPayoutOnBase");
-    expect(payoutTx).toBeDefined();
-    expect(payoutTx?.signer).toBe(testSigningAccounts.EVM.address);
-    expect(payoutTx?.network).toBe(Networks.Base);
   });
 });
diff --git a/apps/api/src/api/services/phases/mykobo-eur-onramp.integration.test.ts b/apps/api/src/api/services/phases/mykobo-eur-onramp.integration.test.ts
index c8aa982b8..c0dc60ea8 100644
--- a/apps/api/src/api/services/phases/mykobo-eur-onramp.integration.test.ts
+++ b/apps/api/src/api/services/phases/mykobo-eur-onramp.integration.test.ts
@@ -1,9 +1,39 @@
-import { describe, expect, it, mock } from "bun:test";
+import {describe, expect, it, mock} from "bun:test";
 import fs from "node:fs";
 import path from "node:path";
 import Big from "big.js";
-import { Keyring } from "@polkadot/api";
-import { mnemonicGenerate } from "@polkadot/util-crypto";
+import {Keyring} from "@polkadot/api";
+import {mnemonicGenerate} from "@polkadot/util-crypto";
+import httpStatus from "http-status";
+import {
+  AccountMeta,
+  BrlaApiService,
+  DestinationType,
+  EPaymentMethod,
+  EphemeralAccount,
+  EphemeralAccountType,
+  EvmToken,
+  FiatToken,
+  MYKOBO_ACCESS_KEY,
+  MYKOBO_BASE_URL,
+  MYKOBO_SECRET_KEY,
+  MykoboApiService,
+  MykoboCurrency,
+  MykoboFeeKind,
+  MykoboTransactionStatus,
+  MykoboTransactionType,
+  Networks,
+  RampDirection,
+  RegisterRampRequest
+} from "@vortexfi/shared";
+import {Transaction, UpdateOptions} from "sequelize";
+import {config} from "../../../config/vars";
+import QuoteTicket, {QuoteTicketAttributes, QuoteTicketCreationAttributes} from "../../../models/quoteTicket.model";
+import RampState, {RampStateAttributes, RampStateCreationAttributes} from "../../../models/rampState.model";
+import {APIError} from "../../errors/api-error";
+import RampRecoveryWorker from "../../workers/ramp-recovery.worker";
+import {QuoteService} from "../quote";
+import {RampService} from "../ramp/ramp.service";
 
 // Mock the EVM Nabla swap quote function before importing QuoteService so the
 // quote engine does not hit Base RPC for the (currently illiquid) EURC<->USDC pool.
@@ -28,36 +58,6 @@ mock.module("../quote/core/nabla", () => {
     }
   };
 });
-import {
-  AccountMeta,
-  BrlaApiService,
-  DestinationType,
-  EPaymentMethod,
-  EphemeralAccount,
-  EphemeralAccountType,
-  EvmToken,
-  FiatToken,
-  IbanPaymentData,
-  MYKOBO_ACCESS_KEY,
-  MYKOBO_BASE_URL,
-  MYKOBO_SECRET_KEY,
-  MykoboApiService,
-  MykoboCurrency,
-  MykoboFeeKind,
-  MykoboTransactionStatus,
-  MykoboTransactionType,
-  Networks,
-  RampDirection,
-  RegisterRampRequest
-} from "@vortexfi/shared";
-import { UpdateOptions } from "sequelize";
-import QuoteTicket, { QuoteTicketAttributes, QuoteTicketCreationAttributes } from "../../../models/quoteTicket.model";
-import RampState, { RampStateAttributes, RampStateCreationAttributes } from "../../../models/rampState.model";
-import RampRecoveryWorker from "../../workers/ramp-recovery.worker";
-import { QuoteService } from "../quote";
-import { RampService } from "../ramp/ramp.service";
-import registerPhaseHandlers from "./register-handlers";
-import { StateMetadata } from "./meta-state-types";
 
 const EVM_TESTING_ADDRESS = "0x30a300612ab372CC73e53ffE87fB73d62Ed68Da3";
 const EVM_DESTINATION_ADDRESS = "0x7ba99e99bc669b3508aff9cc0a898e869459f877";
@@ -267,21 +267,35 @@ describe("Mykobo EUR onramp contract test (real sandbox, no on-chain submission)
     expect(Number(quoteTicket.metadata.mykoboMint?.outputAmountRaw)).toBeGreaterThan(0);
   });
 
-  it("registers a EUR->Base USDC onramp and prepares the Mykobo phase set (no squid, no broadcast)", async () => {
-    const rampService = new RampService();
-    const quoteService = new QuoteService();
-
-    registerPhaseHandlers();
-
-    const quote = await quoteService.createQuote({
+  it("rejects EUR->Base USDC onramp registration while EUR ramps are disabled", async () => {
+    const rampService = new RampService() as RampService & {
+      withTransaction: <T>(callback: (transaction: Transaction) => Promise<T>) => Promise<T>;
+    };
+    rampService.withTransaction = async callback => callback({} as Transaction);
+
+    quoteTicket = {
+      apiKey: null,
+      countryCode: null,
+      createdAt: new Date(),
+      expiresAt: new Date(Date.now() + 10 * 60 * 1000),
+      flowVariant: config.flowVariant,
       from: EPaymentMethod.SEPA as DestinationType,
+      id: "test-disabled-eur-onramp-quote-id",
       inputAmount: TEST_INPUT_AMOUNT,
       inputCurrency: FiatToken.EURC,
+      metadata: {},
       network: Networks.Base,
+      outputAmount: "36.75",
       outputCurrency: EvmToken.USDC,
+      partnerId: null,
+      paymentMethod: EPaymentMethod.SEPA,
+      pricingPartnerId: null,
       rampType: RampDirection.BUY,
-      to: Networks.Base as DestinationType
-    });
+      status: "pending",
+      to: Networks.Base as DestinationType,
+      updatedAt: new Date(),
+      userId: null
+    } as QuoteTicket;
 
     const additionalData: RegisterRampRequest["additionalData"] = {
       destinationAddress: EVM_DESTINATION_ADDRESS,
@@ -290,49 +304,17 @@ describe("Mykobo EUR onramp contract test (real sandbox, no on-chain submission)
       walletAddress: EVM_TESTING_ADDRESS
     };
 
-    const registered = await rampService.registerRamp({
-      additionalData,
-      quoteId: quote.id,
-      signingAccounts: testSigningAccountsMeta
-    });
-
-    if (!registered.unsignedTxs) {
-      throw new Error("Expected registerRamp to return unsigned transactions");
+    try {
+      await rampService.registerRamp({
+        additionalData,
+        quoteId: quoteTicket.id,
+        signingAccounts: testSigningAccountsMeta
+      });
+      throw new Error("expected rejection");
+    } catch (err) {
+      expect(err).toBeInstanceOf(APIError);
+      expect((err as APIError).status).toBe(httpStatus.SERVICE_UNAVAILABLE);
+      expect((err as APIError).message).toBe("EUR ramps are currently disabled");
     }
-
-    const phases = registered.unsignedTxs.map(tx => tx.phase);
-    console.log("Prepared phases:", phases);
-
-    expect(phases).not.toContain("squidRouterApprove");
-    expect(phases).not.toContain("squidRouterSwap");
-    expect(phases).toContain("nablaApprove");
-    expect(phases).toContain("nablaSwap");
-    expect(phases).toContain("destinationTransfer");
-    expect(phases).toContain("baseCleanupEurc");
-    expect(phases).toContain("baseCleanupUsdc");
-
-    const state = rampState.state as StateMetadata;
-    expect(state.mykoboEmail).toBe(TEST_EMAIL);
-    expect(state.mykoboTransactionId).toBeTruthy();
-    expect(state.mykoboTransactionReference).toBeTruthy();
-    expect(state.evmEphemeralAddress).toBe(testSigningAccounts.EVM.address);
-
-    const ibanPaymentData = (rampState.state as StateMetadata & { ibanPaymentData?: IbanPaymentData }).ibanPaymentData;
-    expect(ibanPaymentData).toBeDefined();
-    expect(ibanPaymentData?.iban).toMatch(IBAN_REGEX);
-    expect(ibanPaymentData?.receiverName).toBeTruthy();
-    expect(ibanPaymentData?.reference).toBe(state.mykoboTransactionReference);
-
-    console.log("StateMeta (Mykobo fields):", {
-      ibanPaymentData,
-      mykoboEmail: state.mykoboEmail,
-      mykoboTransactionId: state.mykoboTransactionId,
-      mykoboTransactionReference: state.mykoboTransactionReference
-    });
-
-    const destinationTx = registered.unsignedTxs.find(tx => tx.phase === "destinationTransfer");
-    expect(destinationTx).toBeDefined();
-    expect(destinationTx?.signer).toBe(testSigningAccounts.EVM.address);
-    expect(destinationTx?.network).toBe(Networks.Base);
   });
 });
diff --git a/apps/api/src/api/services/ramp/ramp.service.ts b/apps/api/src/api/services/ramp/ramp.service.ts
index fbdbfcb74..f87e61edd 100644
--- a/apps/api/src/api/services/ramp/ramp.service.ts
+++ b/apps/api/src/api/services/ramp/ramp.service.ts
@@ -199,6 +199,13 @@ export class RampService extends BaseRampService {
         });
       }
 
+      if (quote.inputCurrency === FiatToken.EURC || quote.outputCurrency === FiatToken.EURC) {
+        throw new APIError({
+          message: "EUR ramps are currently disabled",
+          status: httpStatus.SERVICE_UNAVAILABLE
+        });
+      }
+
       const { normalizedSigningAccounts, ephemerals } = normalizeAndValidateSigningAccounts(signingAccounts);
 
       await validateEphemeralAccountsFresh(ephemerals);
diff --git a/apps/frontend/src/components/QuoteSubmitButtons/index.tsx b/apps/frontend/src/components/QuoteSubmitButtons/index.tsx
index bc9e0b1ed..938d39ef6 100644
--- a/apps/frontend/src/components/QuoteSubmitButtons/index.tsx
+++ b/apps/frontend/src/components/QuoteSubmitButtons/index.tsx
@@ -1,6 +1,7 @@
+import { InformationCircleIcon } from "@heroicons/react/24/outline";
 import { useAppKitAccount } from "@reown/appkit/react";
 import { useParams, useRouter } from "@tanstack/react-router";
-import { isNetworkEVM, RampDirection } from "@vortexfi/shared";
+import { FiatToken, isNetworkEVM, RampDirection } from "@vortexfi/shared";
 import Big from "big.js";
 import { FC, useMemo } from "react";
 import { useTranslation } from "react-i18next";
@@ -9,7 +10,7 @@ import { usePolkadotWalletState } from "../../contexts/polkadotWallet";
 import { useRampActor } from "../../contexts/rampState";
 import { useRampValidation } from "../../hooks/ramp/useRampValidation";
 import { useMaintenanceAwareButton } from "../../hooks/useMaintenanceAware";
-import { useInputAmount } from "../../stores/quote/useQuoteFormStore";
+import { useFiatToken, useInputAmount } from "../../stores/quote/useQuoteFormStore";
 import { useQuoteStore } from "../../stores/quote/useQuoteStore";
 import { useRampDirection } from "../../stores/rampDirectionStore";
 import { ConnectWalletButton } from "../buttons/ConnectWalletButton";
@@ -63,6 +64,7 @@ export const QuoteSubmitButton: FC<QuoteSubmitButtonProps> = ({ className, disab
   const rampActor = useRampActor();
   const router = useRouter();
   const params = useParams({ strict: false });
+  const fiatToken = useFiatToken();
 
   const currentErrorMessage = getCurrentErrorMessage();
 
@@ -73,7 +75,8 @@ export const QuoteSubmitButton: FC<QuoteSubmitButtonProps> = ({ className, disab
   const hasInputAmount = Boolean(inputAmount) && !Big(inputAmount).eq(0);
   const isQuoteOutdated =
     (!!quoteInputAmount && !!inputAmount && !Big(quoteInputAmount).eq(Big(inputAmount))) || quote?.rampType !== rampDirection;
-  const isSubmitButtonDisabled = disabled || Boolean(currentErrorMessage) || !quote || isQuoteOutdated;
+  const isEurDisabled = fiatToken === FiatToken.EURC;
+  const isSubmitButtonDisabled = disabled || Boolean(currentErrorMessage) || !quote || isQuoteOutdated || isEurDisabled;
   const showSpinner = hasInputAmount && (isQuoteOutdated || pending) && !currentErrorMessage;
 
   const { buttonProps, isMaintenanceDisabled } = useMaintenanceAwareButton(isSubmitButtonDisabled || pending);
@@ -106,6 +109,14 @@ export const QuoteSubmitButton: FC<QuoteSubmitButtonProps> = ({ className, disab
 
   return (
     <div className={className}>
+      {isEurDisabled && (
+        <div className="mb-4 rounded-lg border border-blue-100 bg-blue-50 p-4">
+          <div className="flex items-center space-x-3">
+            <InformationCircleIcon className="h-6 w-6 flex-shrink-0 text-blue-500" />
+            <p className="text-gray-700 text-sm">{t("pages.widget.details.eurRampUnavailable")}</p>
+          </div>
+        </div>
+      )}
       <button className="btn-vortex-primary btn w-full" disabled={isSubmitButtonDisabled} onClick={onClick}>
         {showSpinner && <Spinner />}
         {isMaintenanceDisabled ? buttonProps.title : buttonText}
diff --git a/apps/frontend/src/translations/en.json b/apps/frontend/src/translations/en.json
index d907e4066..8d03cdc37 100644
--- a/apps/frontend/src/translations/en.json
+++ b/apps/frontend/src/translations/en.json
@@ -1409,6 +1409,7 @@
         "buttons": {
           "next": "Next"
         },
+        "eurRampUnavailable": "We are improving your EUR ramp. It will be back soon.",
         "quoteChangedWarning": "Your quote has changed. Please confirm the new output amount before proceeding.",
         "title": "Enter Details"
       }
diff --git a/apps/frontend/src/translations/pt.json b/apps/frontend/src/translations/pt.json
index 3b9e954d3..2423abdb9 100644
--- a/apps/frontend/src/translations/pt.json
+++ b/apps/frontend/src/translations/pt.json
@@ -1414,6 +1414,7 @@
         "buttons": {
           "next": "Próximo"
         },
+        "eurRampUnavailable": "Estamos melhorando a sua rampa de EUR. Ela voltará em breve.",
         "quoteChangedWarning": "Sua cotação foi alterada. Por favor, confirme o novo valor de saída antes de continuar.",
         "title": "Insira os detalhes"
       }
diff --git a/docs/api/openapi/vortex.openapi.d.ts b/docs/api/openapi/vortex.openapi.d.ts
index 221eb3747..3d697659d 100644
--- a/docs/api/openapi/vortex.openapi.d.ts
+++ b/docs/api/openapi/vortex.openapi.d.ts
@@ -588,7 +588,7 @@ export interface paths {
           content: {
             /**
              * @example {
-             *       "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&quoteId=quote_01HXY..."
+             *       "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&quoteId=quote_01HXY..."
              *     }
              */
             "application/json": {
@@ -605,7 +605,7 @@ export interface paths {
           content: {
             /**
              * @example {
-             *       "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix"
+             *       "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix"
              *     }
              */
             "application/json": {
diff --git a/docs/api/openapi/vortex.openapi.json b/docs/api/openapi/vortex.openapi.json
index 3f86cd18c..8ac48e0c2 100644
--- a/docs/api/openapi/vortex.openapi.json
+++ b/docs/api/openapi/vortex.openapi.json
@@ -3385,7 +3385,7 @@
             "content": {
               "application/json": {
                 "example": {
-                  "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&quoteId=quote_01HXY..."
+                  "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&quoteId=quote_01HXY..."
                 },
                 "schema": {
                   "properties": {
@@ -3405,7 +3405,7 @@
             "content": {
               "application/json": {
                 "example": {
-                  "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix"
+                  "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix"
                 },
                 "schema": {
                   "properties": {
diff --git a/docs/api/pages/08-widget-integration.md b/docs/api/pages/08-widget-integration.md
index 937d7e4f7..50f7acdfe 100644
--- a/docs/api/pages/08-widget-integration.md
+++ b/docs/api/pages/08-widget-integration.md
@@ -46,7 +46,7 @@ The quote does **not refresh automatically**. If it expires before the user comp
 Response: `200 OK`
 
 ```json
-{ "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&quoteId=quote_01HXY..." }
+{ "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&quoteId=quote_01HXY..." }
 ```
 
 ## Mode B: Auto-Refresh
@@ -95,7 +95,7 @@ Vortex validates the route on session creation by attempting to create a probe q
 Response: `201 Created`
 
 ```json
-{ "url": "https://widget.vortexfinance.co/?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix" }
+{ "url": "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&rampType=BUY&network=polygon&inputAmount=150&fiat=BRL&cryptoLocked=USDC&paymentMethod=pix" }
 ```
 
 ## Which Mode Goes With Which Fields
@@ -112,7 +112,7 @@ Open the returned URL in a popup, iframe, or top-level redirect.
 
 ```html
 <iframe
-  src="https://widget.vortexfinance.co/?externalSessionId=my-session-id&quoteId=quote_01HXY..."
+  src="https://www.vortexfinance.co/widget?externalSessionId=my-session-id&quoteId=quote_01HXY..."
   allow="clipboard-write; payment"
   style="width: 100%; height: 720px; border: 0;"
 ></iframe>
@@ -120,7 +120,7 @@ Open the returned URL in a popup, iframe, or top-level redirect.
 
 ```js
 window.open(
-  "https://widget.vortexfinance.co/?externalSessionId=my-session-id&quoteId=quote_01HXY...",
+  "https://www.vortexfinance.co/widget?externalSessionId=my-session-id&quoteId=quote_01HXY...",
   "vortex-widget",
   "width=480,height=760"
 );
diff --git a/docs/api/pages/13-kyb-deep-link.md b/docs/api/pages/13-kyb-deep-link.md
index 73abfa4df..9b042e05c 100644
--- a/docs/api/pages/13-kyb-deep-link.md
+++ b/docs/api/pages/13-kyb-deep-link.md
@@ -18,7 +18,7 @@ After verification the user lands on a **KYB Completed** screen. *Continue* retu
 
 ## URL Parameters
 
-Append one of these to the widget URL (e.g. `https://widget.vortexfinance.co/en/widget?kyb`):
+Append one of these to the widget URL (e.g. `https://www.vortexfinance.co/widget?kyb`):
 
 | URL | Behavior |
 |---|---|
@@ -35,7 +35,7 @@ Query keys are case-sensitive: use `kyb` and `kybLocked` exactly. Region codes a
 `externalSessionId`, `partnerId`, and `apiKey` are forwarded in KYB mode exactly as in the quoted widget flow, so partner and session attribution work the same way:
 
 ```
-https://widget.vortexfinance.co/en/widget?kybLocked=BR&externalSessionId=my-session-id&partnerId=my-partner&apiKey=pk_live_...
+https://www.vortexfinance.co/widget?kybLocked=BR&externalSessionId=my-session-id&partnerId=my-partner&apiKey=pk_live_...
 ```
 
 Pass your partner public key (`pk_live_*` / `pk_test_*`) as `apiKey` for attribution. `externalSessionId` is your own opaque identifier and is echoed back in [webhook payloads](https://api-docs.vortexfinance.co/webhooks).
@@ -46,7 +46,7 @@ The KYB deep link is a normal widget URL, so the same embed options apply:
 
 ```html
 <iframe
-  src="https://widget.vortexfinance.co/en/widget?kybLocked=BR&externalSessionId=my-session-id"
+  src="https://www.vortexfinance.co/widget?kybLocked=BR&externalSessionId=my-session-id"
   allow="clipboard-write"
   style="width: 100%; height: 720px; border: 0;"
 ></iframe>
@@ -54,7 +54,7 @@ The KYB deep link is a normal widget URL, so the same embed options apply:
 
 ```js
 window.open(
-  "https://widget.vortexfinance.co/en/widget?kybLocked=BR&externalSessionId=my-session-id",
+  "https://www.vortexfinance.co/widget?kybLocked=BR&externalSessionId=my-session-id",
   "vortex-kyb",
   "width=480,height=760"
 );
diff --git a/docs/security-spec/05-integrations/mykobo.md b/docs/security-spec/05-integrations/mykobo.md
index 886540cc0..4f84ba4ae 100644
--- a/docs/security-spec/05-integrations/mykobo.md
+++ b/docs/security-spec/05-integrations/mykobo.md
@@ -4,6 +4,8 @@
 
 Mykobo is the EUR fiat anchor used by Vortex for EUR on/off-ramp operations on **Base (Ethereum L2)**. Mykobo settles SEPA bank transfers into / out of EURC (Circle's EUR stablecoin, ERC-20) on Base. There is no Stellar, Pendulum, or Moonbeam involvement for EUR liquidity: all EUR flow now happens on Base, mirroring the BRLA-on-Base architecture.
 
+EUR ramp registration is currently disabled at `RampService.registerRamp`: any quote whose input or output currency is `FiatToken.EURC` is rejected with `503 SERVICE_UNAVAILABLE` before Mykobo intents or phase transactions are prepared. The flow details below describe the intended Mykobo behavior for when the EUR rail is re-enabled.
+
 Mykobo replaces two earlier EUR rails:
 
 - The **Stellar SEP-24 EUR off-ramp** (Mykobo anchor reached via Spacewalk) — removed for EUR. See `stellar-anchors.md` for the deprecation note.
@@ -88,6 +90,7 @@ Unlike Monerium (`moneriumOnrampMint` + `moneriumOnrampSelfTransfer`), Vortex do
 20. **`MYKOBO_CLIENT_DOMAIN` MUST be set in every deployment** — The constant is sent as `client_domain` on every Mykobo API call and selects the negotiated fee tier. Because it is loaded via `getEnvVar` with no default, a missing value silently falls back to Mykobo's default tier (worse fees, observed ~5x higher). Deploy-time checks MUST treat an unset `MYKOBO_CLIENT_DOMAIN` as a hard failure.
 21. **Mykobo intent `value` MUST be floored to 2 decimal places** — Mykobo silently truncates anything beyond 2 dp, which would otherwise cause the on-chain transfer amount and the Mykobo-credited amount to diverge. Both the on-ramp `DEPOSIT` intent and the off-ramp `WITHDRAW` intent MUST send a 2dp-floored `value`, and the off-ramp on-chain transfer MUST be derived from that same floored value (not from the unrounded Nabla output). The sub-cent EURC remainder on the ephemeral MUST be swept by `baseCleanupEurc`.
 22. **The EUR→EURC-on-Base on-ramp MUST take the direct-transfer bypass** — When `inputCurrency === EURC`, `outputCurrency === EURC`, and `network === Base`, `isEurToEurcBaseDirect` MUST short-circuit the route to a single `destinationTransfer` from the ephemeral to the user, with `stateMeta.isDirectTransfer = true`. The Nabla swap, SquidRouter, `finalSettlementSubsidy`, and Base cleanup phases MUST NOT run — routing EURC through USDC and back would burn double-swap slippage/fees against the user and expose the over-subsidy race (`06-cross-chain/fund-routing.md`). The `finalSettlementSubsidy` handler MUST also honor `isDirectTransfer`/`isEurToEurcBaseDirect` defensively and skip to `destinationTransfer` if reached.
+23. **Disabled EUR registration MUST fail before provider side effects** — While EUR ramps are disabled, `registerRamp` MUST reject any quote with `inputCurrency === FiatToken.EURC` or `outputCurrency === FiatToken.EURC` using `503 SERVICE_UNAVAILABLE` before Mykobo intent creation, presigned transaction preparation, quote consumption, or ramp-state creation.
 
 ## Threat Vectors & Mitigations
 
@@ -141,3 +144,4 @@ Unlike Monerium (`moneriumOnrampMint` + `moneriumOnrampSelfTransfer`), Vortex do
 - [ ] No Mykobo API call is invoked from a phase handler without an explicit recoverable/unrecoverable mapping
 - [ ] EUR→EURC-on-Base on-ramps (`isEurToEurcBaseDirect`) emit a single `destinationTransfer` with `isDirectTransfer = true` — no Nabla swap, SquidRouter, `finalSettlementSubsidy`, or Base cleanup phases
 - [ ] `finalSettlementSubsidy` honors `isDirectTransfer` / `isEurToEurcBaseDirect` and short-circuits to `destinationTransfer` if ever reached on a direct route
+- [ ] While EUR ramps are disabled, `registerRamp` rejects EURC input/output quotes with `503 SERVICE_UNAVAILABLE` before any Mykobo or ramp-state side effects
diff --git a/docs/security-spec/AUDIT-RESULTS.md b/docs/security-spec/AUDIT-RESULTS.md
index 6c0684f67..57b0f94fa 100644
--- a/docs/security-spec/AUDIT-RESULTS.md
+++ b/docs/security-spec/AUDIT-RESULTS.md
@@ -629,9 +629,9 @@ No new findings. All 12 prior findings verified fixed. OZ caret range is a minor
 
 ### 5.2 Monerium Integration (DEPRECATED — replaced by Mykobo)
 
-**Spec:** `05-integrations/monerium.md` (deprecated; see `05-integrations/mykobo.md` for the active EUR rail)
+**Spec:** `05-integrations/monerium.md` (deprecated; see `05-integrations/mykobo.md` for the current registration-gated EUR rail)
 
-> Monerium is no longer used. Active EUR on/off-ramp goes through Mykobo on Base. The checks below describe the historical Monerium audit state and are retained for traceability of F-023 / F-024 lineage.
+> Monerium is no longer used. EUR on/off-ramp registration is currently gated before provider side effects; when re-enabled, the EUR flow goes through Mykobo on Base. The checks below describe the historical Monerium audit state and are retained for traceability of F-023 / F-024 lineage.
 
 | # | Check | Result |
 |---|---|---|
@@ -650,11 +650,11 @@ No new findings. All 12 prior findings verified fixed. OZ caret range is a minor
 
 ---
 
-### 5.2b Mykobo Integration (ACTIVE EUR RAIL)
+### 5.2b Mykobo Integration (REGISTRATION-GATED EUR RAIL)
 
 **Spec:** `05-integrations/mykobo.md`
 
-Mykobo replaces Monerium for EUR on-ramp and Stellar/EURC for EUR off-ramp. Both directions now flow on Base, mirroring the BRLA-on-Base architecture.
+Mykobo replaces Monerium for EUR on-ramp and Stellar/EURC for EUR off-ramp. EUR registration is currently gated before Mykobo side effects; when re-enabled, both directions flow on Base, mirroring the BRLA-on-Base architecture.
 
 | # | Check | Result |
 |---|---|---|
diff --git a/docs/security-spec/README.md b/docs/security-spec/README.md
index 6fdc3d07d..9bafe35bb 100644
--- a/docs/security-spec/README.md
+++ b/docs/security-spec/README.md
@@ -36,7 +36,7 @@ This directory contains the security specification for the Vortex cross-border p
 | Token Relayer | `04-smart-contracts/token-relayer.md` | EIP-712, permit, known findings |
 | Integration Template | `05-integrations/_template.md` | Template for new provider specs |
 | BRLA | `05-integrations/brla.md` | BRLA anchor for BRL on/off-ramp |
-| Mykobo | `05-integrations/mykobo.md` | Mykobo EUR on/off-ramp on Base (active EUR rail) |
+| Mykobo | `05-integrations/mykobo.md` | Mykobo EUR on/off-ramp on Base (currently registration-gated) |
 | Monerium | `05-integrations/monerium.md` | (Deprecated) Monerium EUR on-ramp — replaced by Mykobo |
 | Alfredpay | `05-integrations/alfredpay.md` | Alfredpay on/off-ramp |
 | Stellar Anchors | `05-integrations/stellar-anchors.md` | SEP-24, Spacewalk, Stellar payment (fully deprecated; EUR migrated to Mykobo, ARS removed) |
@@ -69,7 +69,7 @@ Every spec file uses exactly four sections:
 | **Spacewalk** | Bridge between Pendulum and Stellar |
 | **XCM** | Cross-Consensus Messaging — the cross-chain transfer protocol between Polkadot parachains |
 | **BRLA** | Brazilian Real stablecoin anchor (BRL on/off-ramp) |
-| **Mykobo** | EUR fiat anchor for SEPA on/off-ramp on Base (settles EURC on Base) |
+| **Mykobo** | EUR fiat anchor for SEPA on/off-ramp on Base (settles EURC on Base; currently registration-gated) |
 | **Monerium** | (Deprecated) EUR stablecoin issuer; previously used for EUR on-ramp via SEPA. Replaced by Mykobo. |
 | **Alfredpay** | Fiat payment provider supporting multiple currencies |
 | **Squid Router** | Cross-chain swap/routing protocol for EVM chains |