Firefox Is Just a Billboard for Firefox Now - Why?

I was using Chrome because I have to. Today, I wanted some semblance of searching that isn't based on the profile Google has of me so I opened Firefox. First thing Firefox did was not ask, but informed me that it was being update. I waited - unamused- and when it was done I had a page of more stuff about Firefox, but no browser. Just huge ads. Url said it was Firefox so ... No access to it as a browser. No hints as to what just happened with the unrequested update. This isn't about updates. This is about Firefox on my desktop so it won't show an abundance ads about Firefox. with an abundant amount of ads. So, how do I get Firefox back and being a browser? Mozilla doesn't have to sell me on Firefox. I was sold on Firefox when Mozilla was first getting it's browser online. Your response is genuinely appreciated - really. ~r