Account

Already linked Steam account. How to delete an account?
Failed to change the mail address. I created a new account with my mail, but you can not bind the already attached Steam there.

Once a game account has been linked to a FACEIT account, the game account cannot be removed or moved to a new account.

You can try - https://support.faceit.com/hc/en-us/articles/208596705-No-longer-have-access-to-my-email-account- or request support ticket.