diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index 5da98ab8e..73c563032 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -1,6 +1,7 @@
 import axios from 'axios';
 import { PromoCodeProps } from './types';
 import { PASSWORD_REGEX } from '@/components/cloud-object-storage/integrated-checkout/components/InputsComponent';
+import { isCelloExpired } from '@/lib/cookies';
 
 export const IFRAME_AUTH_ENABLED = false;
 export const REDIRECT_AUTH_ENABLED = true;
@@ -265,13 +266,15 @@ export function checkout({ planId, promoCodeId, planType, mode, currency, gclid
     mode && params.set('mode', mode ? mode : 'subscription');
     gclid && params.set('gclid', gclid);
 
-    const currentParams = new URLSearchParams(globalThis.location.search);
-    const celloProductId = currentParams.get('productId');
-    const celloUcc = currentParams.get('ucc');
-    const celloN = currentParams.get('celloN');
-    if (celloProductId) params.set('productId', celloProductId);
-    if (celloUcc) params.set('ucc', celloUcc);
-    if (celloN) params.set('celloN', celloN);
+    if (!isCelloExpired()) {
+      const currentParams = new URLSearchParams(globalThis.location.search);
+      const celloProductId = currentParams.get('productId');
+      const celloUcc = currentParams.get('ucc');
+      const celloN = currentParams.get('celloN');
+      if (celloProductId) params.set('productId', celloProductId);
+      if (celloUcc) params.set('ucc', celloUcc);
+      if (celloN) params.set('celloN', celloN);
+    }
 
     window.location.href = AUTH_FLOW_URL + `${pathname}?${params.toString()}`;
   }
diff --git a/src/lib/cookies.ts b/src/lib/cookies.ts
index f317dd49c..6893b09af 100644
--- a/src/lib/cookies.ts
+++ b/src/lib/cookies.ts
@@ -6,6 +6,7 @@ const url = require('url');
 const queryString = require('querystring');
 
 const GCLID_COOKIE_LIFESPAN_DAYS = 90;
+const CELLO_EXPIRATION_DAYS = 30;
 const MILLISECONDS_PER_DAY = 24 * 60 * 60 * 1000;
 
 function parseUri(ctx: GetServerSidePropsContext) {
@@ -88,10 +89,31 @@ export const getGclidFromURL = (): string | null => {
   return params.get('gclid');
 };
 
+export const saveCelloFirstVisit = (): void => {
+  if (typeof window === 'undefined') return;
+  if (localStorage.getItem('cello_first_visit') === null) {
+    localStorage.setItem('cello_first_visit', new Date().toISOString());
+  }
+};
+
+export const getCelloFirstVisitDate = (): string | null => {
+  if (typeof window === 'undefined') return null;
+  return localStorage.getItem('cello_first_visit');
+};
+
+export const isCelloExpired = (): boolean => {
+  const storedDate = getCelloFirstVisitDate();
+  if (!storedDate) return false;
+  return Date.now() - new Date(storedDate).getTime() > CELLO_EXPIRATION_DAYS * MILLISECONDS_PER_DAY;
+};
+
 export default {
   parseUri,
   setCookie,
   getCookie,
   setReferralCookie,
   setPublicCookie,
+  saveCelloFirstVisit,
+  getCelloFirstVisitDate,
+  isCelloExpired,
 };
diff --git a/src/pages/specialoffer.tsx b/src/pages/specialoffer.tsx
index 7db0a67d5..5b3a5addb 100644
--- a/src/pages/specialoffer.tsx
+++ b/src/pages/specialoffer.tsx
@@ -1,7 +1,9 @@
+import { useEffect, useState } from 'react';
 import Layout from '@/components/layout/Layout';
 import Script from 'next/script';
 
 import { PromoCodeName } from '@/lib/types';
+import { saveCelloFirstVisit, isCelloExpired } from '@/lib/cookies';
 import Footer from '@/components/layout/footers/Footer';
 import usePricing from '@/hooks/usePricing';
 
@@ -30,6 +32,13 @@ function SpecialOffer({
   footerLang,
   navbarLang,
 }: SpecialOfferProps): JSX.Element {
+  const [isCelloAttributionExpired, setIsCelloAttributionExpired] = useState(true);
+
+  useEffect(() => {
+    saveCelloFirstVisit();
+    setIsCelloAttributionExpired(isCelloExpired());
+  }, []);
+
   const metatags = metatagsDescriptions.filter((desc) => desc.id === 'special-offer');
 
   const {
@@ -84,7 +93,13 @@ function SpecialOffer({
 
   return (
     <Layout title={metatags[0].title} description={metatags[0].description} segmentName="Partners" lang={lang}>
-      <Script src={process.env.NEXT_PUBLIC_CELLO_ATTRIBUTION_URL} type="module" strategy="afterInteractive" />
+      {!isCelloAttributionExpired && (
+        <Script
+          src="https://assets.cello.so/attribution/latest/cello-attribution.js"
+          type="module"
+          strategy="afterInteractive"
+        />
+      )}
       <Navbar lang={lang} textContent={navbarLang} cta={['payment']} isLinksHidden hideCTA />
 
       <HeroSection textContent={langJson.HeroSection} percentOff={percentOff} image={'internxt-private-cloud'} />
diff --git a/src/pages/specialoffer/[filename].tsx b/src/pages/specialoffer/[filename].tsx
index e34c7c28f..322fa4fe9 100644
--- a/src/pages/specialoffer/[filename].tsx
+++ b/src/pages/specialoffer/[filename].tsx
@@ -1,9 +1,10 @@
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
 import { useRouter } from 'next/router';
 import Layout from '@/components/layout/Layout';
 import Script from 'next/script';
 import { PromoCodeName } from '@/lib/types';
+import { saveCelloFirstVisit, isCelloExpired } from '@/lib/cookies';
 import Footer from '@/components/layout/footers/Footer';
 import usePricing from '@/hooks/usePricing';
 import Navbar from '@/components/layout/navbars/Navbar';
@@ -65,6 +66,7 @@ function CombinedSpecialOffer({
   pathname,
 }: CombinedSpecialOfferProps): JSX.Element {
   const router = useRouter();
+  const [isCelloAttributionExpired, setIsCelloAttributionExpired] = useState(true);
   const selectedPathname = ALLOWED_PATHS.find((p) => p === pathname);
   const isDarkMode = selectedPathname ? DARK_MODE_PATHS.includes(selectedPathname) : false;
   const isValentinesMode = selectedPathname === 'love';
@@ -79,6 +81,11 @@ function CombinedSpecialOffer({
     }
   }, [selectedPathname, router]);
 
+  useEffect(() => {
+    saveCelloFirstVisit();
+    setIsCelloAttributionExpired(isCelloExpired());
+  }, []);
+
   const couponCode = COUPON_CODES[pathname];
   const metatags = metatagsDescriptions.find((desc) => desc.id === 'special-offer');
 
@@ -148,7 +155,13 @@ function CombinedSpecialOffer({
       lang={lang}
       robots="noindex, follow"
     >
-      <Script src={process.env.NEXT_PUBLIC_CELLO_ATTRIBUTION_URL} type="module" strategy="afterInteractive" />
+      {!isCelloAttributionExpired && (
+        <Script
+          src="https://assets.cello.so/attribution/latest/cello-attribution.js"
+          type="module"
+          strategy="afterInteractive"
+        />
+      )}
       <Navbar lang={lang} textContent={navbarLang} cta={['payment']} isLinksHidden hideLogoLink hideCTA />
 
       <HeroSection