Now one week ago I received the mail from Google that due to illegal activity detected they had to close my account.
I did check what might have happened, as I'm dead sure that I never clicked on my ads. It's a normal discussion forum with already more than 1200 threads in German and Spanish.
The only thing I can guess is the following. Two users got into a verbal fight and one user wrote some real bad and threatening stuff using a non acceptable language. As soon as I discovered the thread I censured (cancelled the words) and banned the user.
Do you think it could be because of that? Because only a couple of hours later I received the banning notice from Google.
I explained all facts to Google on their form hoping to get a positive answer, but I'm not too optimistic about that.