Many Times un Befinning Accuweather Appears for No Reason If I turn Down Update feature. Let's end that Pop Up

Beyond My Experience. As I Bring up Firefox Upper Right Flag Yo Update Firefox. IF I DISMISS, TROUBLE STARTS. FOR NO REASON ACCUWEATHR APPEARS. IF I X Firefox Shuts Down. Instead to Remain Online, I have to Use a Bookmark and Continue. Not in My Bookmarks, How Can I Stop That Annoyance Pop Up. Thanks, Joe