https://forums.opera.com/topic/67729/i-cant-syncronize-my-apps-with-opera-connection-failed/90?lang=en-US
I cant syncronize my apps with opera: Connection failed | Opera forums
Apr 24, 2024 - @freedombeyoung If you can login to Sync, try checking opera://sync-internals to see if synchronization is happening.
my appsopera connectioncantfailedforums