Fraaby

Okay.. I just bought the game, srsly, come on, i joined a random server and ran for like 10 minutes. And then a "bubble" come up on my screen and say "You were kicked of the game. (BattleEye: Global ban #ce631c) What the fuck? I just bought it on steam, installed in and get banned, what the heck is this? Please help me, please do something, waste of money.

Ouch, and where can i so buy a new cd key? And it is legal?