Maybe the reason to get chatted is as a result u allow it, maybe better via e-mail or something else.
From what i can see, in my 5 years experience, inhere and softnyx, the problem always regard some spam, hack, or bad words.
I understand that this kind of game sites are produced for make money, but... unfortunately, there is 3 mayor problems regard playing.
!. Wolfteam cannot provide protection from hackers. In these month almost in every room with same or different hack. Lot of people paid for what? I suppose to play safely. Recording or make snapshots take lot of time and people cannot play. I have noticed that is a good number of honest, fer players and trusted guys. Maybe as a suggestion, to give them the possibility to instantly trough some key, signalize to the admins the presence of hackers or else, so u can focus only to that, and reject all the chat.
2. U don't have a good word identifier for bad words. Lot of people are insulted by ill, frustrate and psychopathic gamers. I haven't heard more anger, rage and bad words in my life, and, I must say I am not a young person.
3. Still, laggin players... Maybe reduce the ms amount for been kicked. Lot people thinks that is a hack.
With best regards