I've honestly never been aware of the "lock account" feature, so don't know if it can even be recovered independently without the help of the recovery team.
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What I do have though is:
- Access to the registration email and current email
Does that mean you can't also receive a recovery process email if you click the "forgot account" button?
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Perhaps I could add a signature on the website?
In my opinion, it's best to do it after the instructions from recovery team.