No way to block players – Nine Men's Morris Multiplayer Review

I love the game and can't stop playing it. I am a teacher and I teach this game in my classroom. Apparently a player Sinan uses this app to tell off Americans. He has it set up so you receive no points to win and -10 if you lose. He leaves right away after he messages "My name is Osama Bin Laden and I F your navy. " He should be banned. Please don't allow him to play.
Review by Skyyyyyyyyyyyy on Nine Men's Morris Multiplayer.