On mine, I just click the BG icon in my bookmarks toolbar to the right of the url window. Then top right in that window, I click the 3 dots that are next to the settings icon. Then click "support", you should see "factory reset" at the bottom of that list. It seems to be working when I did that, but day by day it starts to get a little slower and slower. I also found that MANY sites are now either blocking users from seeing content, OR degrading the users experience while on the site/s if they have an ad blocker enabled. I wish there were a workaround for that problem. I never click on any ads, and I surely don't want a half page full of them. But sometimes you have to!