I rolled back to version 58.0.3135.132 because I got tired of constantly having to switch the sidebar off and on when I needed it also I did not like the way Opera 62 screwed with the Speed Dial (there was a huge blank space above my speed dials).
I deleted every entry marked autoupdate or update in every Opera folder I could find plus deleting Opera from Task Scheduler. However, I still get the notification to update Opera at the top of the main Opera menu. The only way I can get rid of it is if I click on Update & Recovery in the menu, but it's only temporary since it just pops right back up if I open Opera again. It's annoying and I DO NOT want to update Opera at all!! Is there any way at all I can stop Opera from nagging me to update every time I open it?
Absolutely incredible that they don't have an option for this - On my newer computer Win 10 - Windows Edge rocks now, but with the Windows 7 - still stuck between Chrome / Opera (one nags for updates and other begs for default browser).