Hello everyone.

I just bought Crysis 2, I added the game to my Origin list with the Serial Code and it went well. I downloaded the game and it went fine but now when I'm trying to start it it requires me to write down the Serial Code a second time and it's not working, it says that the code is invalid.

Now I can't acces the downloaded game and I can't seem to find any help at the support site.
What should I do?

where it says the activation code is invalid, in activation window before the game starts, or when the game starts and prompts you to enter username, pass and serial?