They sadly have removed that feature and replaced it with the phone number thing.

Nope i need a phone number or email for it.

It looks like they also put their password there and i tried the username + password and nothing happened.

I searched for their name and found nothing.

Actually the account name is in the manual because the owner wrote it there for some reasonn but i don't think i want to do that because there is a chance they still use it.

Realised it too late. I still won't throw it away though.

Didn't know it had an activation key. I won't sell it i will keep it because it looks cool on a shelf and buy the game on steam for like 1€ during the next steam sale.

I bought it used and the one who had it before me has already used it.