https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/ Is this the adblocker you are talking about?

I clicked on this link and all it did was download Firefox again. I had Firefox and still have it but the Adblock Plus icon that was installed on my Firefox is still not there. I had it installed and it disappeared. Firefox didn't just the icon for Adblock Plus. It was shaped like a red stop sign with 6 sides and the initials ABP was inside. The icon is still on my Microsoft edge.