I've been a Firefox user for at least 10 years. I recently installed Firefox on a new desktop PC, and the Firefox Privacy Notice tab popped up. "No worries," I thought, and read it and made my cookies choice. I didn't find anything about a separate "submit" or "Close" gadget, so I simply closed the tab. Now, every time I leave the Home page or open a new tab, the Firefox Privacy Notice keeps popping up. Please advise me how to close it for good.