UUID won't be supported on offline servers

and proxied servers behind a bungee multiserver proxy must run in offline mode

other mods add a configurable option to use it or not

I'm not sure about this option. Offline mode servers generate UUIDs from playernames, so there shouldn't be any problems with this.

ya your right, i did some more looking and on newer versions they make 'fake' uuids. which will work fine for your mod

my mistake, sorry