I had multiple accounts all are deleted (closed) but I can't use some of the previous username, how can I ?
Hmm. Well, if they weren't closed for cheating or other abuse, you can reopen them.
https://support.chess.com/en/articles/10971891-how-do-i-reopen-my-closed-account
I used fake emails in the previous ones I just want to use my old username
I used fake emails in the previous ones I just want to use my old username
It's unlikely you'll be able to. Unless you can prove those were your accounts or if they've been closed pong enough and you purchase and keep a premium membership long enough.
https://support.chess.com/en/articles/8599051-how-do-i-request-an-inactive-username
I had multiple accounts all are deleted (closed) but I can't use some of the previous username, how can I ?