Форум поддержки Firefox

My search engine, set to be Google in Settings, is Yahoo every time I try to search. I went to your "solutions" page and followed all instructions, to no avail. When I open "add-ons" I get nothing but a blank page. I deleted and reinstalled Firefox, and that did nothing either. I've been forced to change to Chrome as my default browser, and there I can use Google. Please help!

On the Total Adblock site it gives these directions for removing the program: "Mozilla Firefox Uninstalling Adblock from your Mozilla Firefox browser is very simple and can be done within a few clicks. Go to the Extensions Page on Mozilla Firefox copy this link into the address bar of your browser:about:addons

Find Total Adblock within your plugins . Click the 3 Dots. Click Remove."

I do not know where the "extensions page" is. Nor where to find it. While I have been using personal computers for decades, I am still a complete beginner when it comes to any technical jargon. If someone would kindly give me directions in English about getting rid of this annoying extension/program? I would deeply appreciate it.

In the last few days every time I click on a link on a page, it takes me to Yahoo Search Engine, which I don't want! My choice is GOOGLE SEARCH ENGINE!

Also at the same time this changed, if I click to go to Add Ons it takes me to a Blank Page?

Never had these problems before, tried many outdated suggestions, which don't work?