Maybe you just have to deauthorize a license. You can "authorize" up to five computers to play the game at the same time. If ever you think you have reached this limit you can view the number of available activations by running the Activation.exe.
ERROR MESSAGE:
The activation limit for this serial number has been exceeded. Contact customer support for more information.
If you receive this error message you will need to revoke licenses using the Activations.exe on PCs no longer using this game. (If Origin installed on your computer, Activations.exe will be located in the Origin Games folder.)
A sticky message is available here: Deauthorizing Need for Speed Hot Pursuit on PC
If you cannot revoke 1 one of your license, you will need to contact a Game Advisor.
I hope this explanation can clarify the situation.