Possible plugin conflict?

[Spigems2]

Describe your environment

• CreativeGates version: 2.10.1
• Spigot version: 1.11.2

The server I added Creative Gates to runs Multiverse, which has a 'world prefix' setting to display which world the player is in when typing. I downloaded and installed Creative gates to the server, unfortunately upon doing this the world prefixes disappear. I removed the Massivecore.jar from the servers files and restarted and the world prefixes came back, however this then obviously effects the portals functions in game.

Expected results
Upon removing Massivecore.jar from the files the portals will still exist with no function, and using the clock to re-insert a portal doesn't work. (Creative gates functions fail)

Thank you.

If you need more info let me know! (: