Dear Support,
Regarding the first email from avast passwords:
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Dear user,
Should you ever lose one of your devices, you'll need to find this email in order to access your account, and keep using Avast Passwords.
If anything should go wrong, or you ever have a problem connecting to your passwords, please click the button below, and we'll help you get things back to normal.
Restore
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Restoring backup and manual autorization of a device require original password. What if that password is lost and I WANT THE BACKUP GONE AND EVERYTHING RESET, so I can start from beginning? How to accomplish that?