[processing please hold]

I'm going to get rid of them both when I'm through here. I have added many extensions/add on (if those are two separate things)

You might try uninstalling those in reverse order

Where would I find them at to uninstall them?

[discostu]

Go to Tools/ Add-ons, that will give you your list. It looks like it’s in alphabetical order so you’ll need to remember what you added last but you can uninstall them from there, at least all the ones I know about are in my list. I suppose it’s theoretically possible some might not show up there in which case you need to leave FireFox and go to your windows Control Panel, Add Remove Programs and find them there.