Solved
key
So, I bought the game through Steam and decided to give the multiplayer try. I noticed it needed an ea account in order to connect, so I created a new one, filled my information in there, put my emai...
bad company 2 is a non-steam game
1. sign in https://www.ea.com/
2. add your key
3. download and install origin
4. install the game from origin
