Chopper3434

I have been playing Arma 2 for a while now on dayz, I have a steam purchased OA and a disk purchased ARMA 2, both are fully updated. Since last night I have been getting a "bad CD key" error when trying to join any server, I have tried re-installing the game(s) and I have run steam in adminstrator with the proper launch options for a dayz addon, to link both the games (due to them not both being in steam) I have been using a launcher which is updated, it was working up untill last night, I've been looking in several threads without finding a fix and my ARMA 2 key is legit as i have owned the game for several years. Any help?