Can't play YouTube Videos on Firefox

[Taxboy]

Looking for some advice please. When I go to click the image to play a YouTube video instead of playing it jumps to a discussion from one of my subscribed channels. Any advice appreciated please

Im using Windows 8.1 with Firefox v 82.0.3

 

[Taxboy]

Does it do the same in incognito? (ie with no extensions/add-ons enabled)

Thanks for the steer. I disabled the add ons and then reloaded them one by one until I found the culprit

 

[Taxboy]

I'm afraid I can't remember as I deleted it along with some others that I didn't see the need for. However from memory I think it was one that allowed you to play youtube videos in HD