I had a different version of citadel on the server and my pc. Thank you for helping I can play now. 
Posts by fanypico3
The Aternos forums are now deprecated
Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.
-
-
I have it on my pc, but I don't on my server. I'm going to add it, and I'll try to join again to see if that works.
-
-
Forge server log [#eujbDa6] - mclo.gs
I think is this one, I don't have a carpet called latest or latest.log but this is the last log I have from yesterday.
-
Hi, my boyfriend and I have been playing on a modded server for months. He usually updates and adds mods with no problems. Yesterday, we added some light mods, and the server works, but we cannot join. When we try to join, this error pop-out "failed to synchronize registry data from server." We removed the new mods thinking that would fix it, but it didn't. We made sure every single mod was the same in the server and the client. Still, the same errors appear. We really don't want to lose our world, and we are desperate.
Thank you. We'll appreciate the help.