I wrote this in another thread but it may be to start one self.
My Sync does not work. I have an orange exclamation mark next to the profile picture. I have the latest version 58.0.3135.53
It says i'm signed in already, passphrase is accepted but the O-meny says "Signing in...."
I have reinstalled Win 10 pro, and Opera but still same. Read about deleting \AppData\Roaming\Opera Software\Opera Stable. The folder reappeared but didn't solve the issue.
I changed my password earlier yesterday though, but the new PW seems to work fine.... or? The old one does not work anymore for sure.
https://sync.opera.com/web/ shows all my data as it should, but Opera does not sync with it for the last 24 hours.