This is the biggest feature that is stopping me from switching. I used Opera in the past but realized the group tabs feature was not available. Opera instead has something called speed dial but it is not the same. I would really appreciate if grouping tabs was a thing as I really only use chrome right now because of that.
@sunsetmartini So when you go to sync.opera.com you don't see any synced data?
If so, then you should be able to change your passphrase or stop using it in the settings page of Opera.
Your passphrase is stored locally only and that's why you need to change it in Opera's settings page.