Hello, currently Facebook is scanning Checkpoints instead of checking via email. They will verify through phone numbers (virtual phone numbers used to unlock accounts or verify identities. We have absolutely no access), which will make unlocking more difficult than it is now. We are currently trying to find a way to unlock this type. What you need to do after buying the account is remove the old phone number and avoid logging into the browser you used. If your account is locked, just wait for Facebook to fix this feature