What's the screenshot of that tab? Also did you clear cache/history to make sure it didn't get saved. And what Setup instructions are you referring to here?

Attaching the screen shot. Cache/history is cleared. See setup instructions in screen shot. When I open my Mozilla browser, this tab opens. Set up was done already. This started happening with the last update of Firefox. I hit the escape key to remove the tab window from my browser but should not have to do that every time I log on to the browser.