For whatever reason the portal to ratlantis, in multiplayer, isn't doing anything. I checked the logs and there are no errors whatsoever.

Java version: 8
Rats Version: latest stable 1.16
Forge version: 32.0.63

this was a big issue with custom dimensions in 1.16. To fix it simply run the /reload command twice and restart the server. Should fix it right up. This should no longer be an issue in 1.19 once the mod finishes updating to it

I'm having the same issue - works in singleplayer but not on a dedicated server.

MC: 1.16
Forge: 32.0.75
Citadel: citadel-1.2.0.jar
Rats: rats-6.0.4-1.16.1.jar

yeah same multiplayer portals to ratlantis doesnt work

donts works 11/08/2020

Same issue here, enigmatica 6 with rats, IaF, Silent's Gems, and Silent Gear added. Rats 6.0.6. Using "/execute in" shows that "rats:ratlantis" appears to be missing from the registry.