Your mod directly makes a request to Patreon to check paid members and issue rewards, however, in countries where it is blocked, due to an unsuccessful connection attempt, you are simply not allowed into the world with the error "Invalid player data"
After enabling VPN everything worked. It would be more reasonable if you used your own server for queries, this will solve the problem

It is a separate server (not Patreon), but still may be blocked. Even so, it should just fail quietly if it can't connect. Can you send me your latest.log?

https://pastebin.com/ijk5wcx4

First came in under VPN, then from Russia

Try in 0.3. This is quite a hard one for me to test.

Fixed

Great!