Flashplayer And Opera Browser

Yesterday I was online and in a game I play on Facebook when my opera browser stopped responding. After a few minutes the browser started working again, but the game page now stated that I needed to download and install flash player in order to play. I tried clearing the cache, history, cookies and everything else then rebooted the computer and tried to access the site again, with the same result.
So I tried installing the flash player and got a message stating that I needed to uninstall flash player before installing it again (so it was in fact installed). Anyway, I found the steps for doing a complete uninstall of the flash player and followed those steps, cleared everything, rebooted the computer, disabled my anti-virus and then installed the flash player again.
But I am still having the same issue. I have run all sorts of scans on the computer and the computer is clean. I can access the site using the firefox, vivaldi and chrome browsers but it is not working with the opera browser.
I have the opera browser set in exceptions to allow that site - which is the way it has been set for quite some time. Yet I still get the same result now.
I really like using opera and I could try uninstalling the browser and then reinstalling it, but I also hate to think that I will then have to set everything to my liking again, as well as keeping my bookmarks in their folders, and the speed dial set the way that it currently is.
I am not sure what the heck I am missing or doing incorrectly. Any suggestions would be greatly appreciated. I also tried adding the site in different formats to the allowed sites in settings but that has not helped either.

 

Forgot to mention - I am running windows 10 Home edition and all of my browsers are up to date as well as Windows 10.

 

when i have run into problems with flash, i go into flash's control panel app, and clear all site data. this usually fixes my problems. opera is great, and it has its own ad blocker built in. if you have the ad blocker turned on, i have noticed that if opera is blocking stuff, a little message will show up by the title bar (?). stating that it has blocked insecure content. and if you are quick enough, you can click on the pop up message and unblock the "insecure content". flash is kind of a pain on windows computers, because IE has their own version, firefox has their own version, and the opera browser has yet a different version for flash, so i am always downloading 3 different versions of flash for my windows computers. good luck with it.