I am sure it's a bug with this plugin - I've just installed the it and disabled to false all friends settings (the server uses clans and rust team, no friends plugin added) and should be OK but nope. When you leave/get kicked out of the clan and also from the RustTeam you can still somehow access the doors and can open them. As I know if you entered the code manually before the autoauth it will be like this but the player didn't entered anything and he still have the auth. That's the problem.