I contacted the german origin support via chat and got the info (after the support checked internally) that it is not possible for them to create a key for me or grant me access to BF2.
We were not even discussing my real key, just generally checking.
Any advice how to proceed here ?
I went online and talked to an EA Advisor and they told me it was impossible. They were extremely rude and ended the chat before I was even done with my questions. I don't care how old the game is, I want to play again.