Hello @user35926 ,
If you're unable to login using the current account owner's credentials, or unable to access their email for forgotten username/password and MFA reset processes, then we'd need you to call general support. That way we can securely confirm a few details, go through our standard protocols, and get a case submitted to a team lead for the account ownership transfer.
If you are able to get logged in using their email and login credentials, then I'd recommend following along with our article on account ownership transfers.
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