Clan invitation Bug

Game mode: Online
Problem: Bug with clan accpet
Region: Brazil

I’ll try to explain my problem with google translator:

I started pvp on May 17 on server 3995, this first day I was invited to join a clan, I accepted and nothing happened until yesterday. Now I am part of a clan with 1 member that is no longer online and everything I have built since the 17th belongs to me no more. My id is on a base (owner), my other bases do not belong to me anymore and I can no longer build anything in my base, says that the place already has owner. I can rebuild everything, I wonder if there is a way out of this clan and restore my constructions. Thank you

Steps on how to reproduce issue: