Maybe there is a "Parental tab grouper" extension.
At the other hand, if did not found any SpeedDial sepperator replacement, file:///C:/ or file:///C:/Users/Public/Desktop/ may help you - or the equivalents for your OS -.
Things that come to my mind: 1, you shouldn't need pepperflashplugin-nonfree, and 2, can you disable NoFlash and see if you still have problems? If NoFlash is complaining, this seems more a bug on their side, rather than Opera's.
I can not load some games I like to play on facebook because of Opera and Flash player. I just get a blank purple screen when trying to load Hit It Rich Casino Slot game on Facebook using Opera. I used to like Opera and it worked fine up until a month ago. Now I am back to using Chrome because it is the only way I can play the game.
@jayaguru-shishya Those are not related to the problem discussed on this topic.
They are about issues with Flash that came with the changes in Chromium that now requires white-listing of pages for Flash to play on them while this topic is about an old problem with Flash playing on Opera for Linux.
@sgunhouse Hi there! You were right, I had to change my file browser to show hidden files (Files > Home > View > Show Hidden Files). I manage to localize the file in question from the following path:
/home/xxxxxs/.config/opera/Local State
I just changed the country code from TW to FI, and everything seems to be working fine now!
Actually, the problem got fixed after I ran some system updates on my Linux Ubuntu 16.04 LTS (still a test version) ;-D Or perhaps it my Opera browser that got updated, that is a test version as well!