Hi, I'm having the same issue I bought Combined Operations from Amazon 2 days ago, and multiplayer is not working for both ARMA II or OA. However, for OA it specifically says "bad CD key." For ARMA II it just kicks me back to the server list without saying anything. Please anyone (especially Admin) HELP. Where can I get a valid CD Key? I have proof of purchase and everything! I already contacted Amazon, but they haven't helped yet.
Everything is in latest patch: OA is 1.59, ARMA II is 1.09
And one last thing: The publisher I purchased from is Meridian4