So is the sync account the original not from another sync Firefox browser? Cause only way to restore the data or find it - is on the original computer or device the data was created in order to find that data.

HELP!!! Firefox updated and ALL of my saved passwords have disappeared. It demands I turn on Sync. I've NEVER USED Sync. I don't even have a smart phone. How do I fix it? When I click the login button nothing happens. I can't even enter the Master password. I was relying on Firefox to remember my 200+ passwords.