Plutonium

and, I don't know if it has something to do whit this, but alsow warzone and cold war gave me the that the server were not available.

I was playing on zombie bo2 whit my firends, but, after we decided to swhitch to multyplayer, i crasced, every time I try to open 'Online' to change class, it made me wait a few second and after gaved me this:

I tried everything and after I alsow disinstalled the game, but still did't work. I tried also to join a server from the start, but made me crash.
On the forum I didnt' found much help, can someone help me? pls