kcpecas

I cleaned up my system and reinstalled Arma2 Free, the thing is that I didnt have my old key :confused: so I registered for a new key at bohemia interactive website with my email, and got a new key. now it says "Invalid cd key" all the time, somentimes even show some weird characteres, or kick me from the game in every server. What is the problem? I dont know what to do.