I had an old account with an email that doesn't exist anymore so opened a new account. Half the games I bought were on the old account. When trying to play it would make me bind it with my old account, so I would sign out and sign in with my current account, game starts. That got tedious so I deleted my old account all together not knowing that if I try to play, now they couldn't verify the ownership with the new account. So went to undo the closure of the account but can't since I have to verify with the old email. Stuck. Although the process of getting the old account merged to my new account was out of my control without access, Ubisoft verified my purchases, verified my identity and put all my old games on my new account, problem solved. They worked with me to get this done, responded to me almost immediately between emails back and forth and saved alot of headache.