I bought a Fifa 20 (PC version) from a guy last December, he also gave me his Origin account to be able to play as at is already a redeemed game.

Is it possible to add the game to my Origin?

Nowadays I got the message from the game that I am banned from the online connection, because the Origin account is too young. I wanted to change, but it is not possible because I do not have access to the mailbox of the given e-mail by the previous owner. Can I link the the game to my account?