Log in problem !

Hello guys, I realy need help on warrock. When I try to log in and pick server, a message pop up. I says : Connection will be terminated becaus of abnormal gameplay...
This message come after I pick a server. It is the same on my main acc, and my secound "test" acc
I have tried to re-download warrock, but dont help.
When did it became abnormal to pick a server ? lol..
Can someone help me ?

PS : Sry bad english

Btw : I can log in to the accounts on warrock.net ...

Are you running any hacks?

No. But today I told my friend the pw and username, to make sure I wasent blocked or something, and he could play and everything worked. (On my acc)
So it has to be something about my warrock file .. But I dont know what ! (I have tried to re-dl)