Can i use the same serial key to play online

[vapera29]

Hi
My command and conquer generals deluxe edition was one of those faulty ones with botched serial keys that gave you the error "serial invalid, try another" Despite it being a brand new copy.
I do remember EA doing a recall on those stupid copies. but i couldn't be asked to contact them, knowing EA's abysmal support.

So the question is if i buy a brand new copy (not deluxe edition) and i download it on my pc and play online with it.
Then later on when i buy a laptop and download it on to that can i play online with the laptop? would it say serial number already in use?. If i use the same account and not play at the same time?
Really hope to get a quick reply. Thanks

[Klandri]

I'm not sure, but since the game is not on Origin I think the answer is no. But I'm not 100%... :/