A Few Questions...

As the mayor to your region, you are free to evict players from your region. We ask mayors to try and hash out the incident on their own until a player refuses to abide by the mayor's request.
If you are trying to evict a player and they refuse to go, you are welcome to report them on player reports.
Though you are responsible for your own claims, griefing is still griefing and in obviously malicious cases, we will step in at the player's request. Again, you can file this as well in grief or player report.
As for thieving, there is no good way to determine that the items taken were maliciously done. We advise players trust only who they can actually trust. If not, please subdivide your claims to allow trust in specific portions of your claim.

Another question (i haven't gone on the server yet) when i try to play it says "failed to verify username why is this and how do i stop it