how to add old games to your computer library?

Hey ChiliKongArneDK​ -- for most of those games, you should be able to enter the CD key directly in the “Redeem Code” section of the EA app (you’ll need the app installed first).

Let me know if it works or if you run into any issues!

I have tryed that. 

first installed app. and then tryed ¨redeem code¨

I have Command and Conquer generals + command and conquer generals zero hour.  + Command and conquer - The first decade. 

have tryed the cd keys from all of them.  

ChiliKongArneDK​ -- thanks for trying that.

Are you getting any specific error message when you try to redeem the codes? If so, could you share what it says?

If the codes aren’t being accepted, you’ll need to reach out to EA Help so they can check the keys on their side and assist further.