 Add-Ons not working, Cant downloadinstall new ones I-Firefox Isithangami Sokweseka Ukwesekwa kwe-Mozilla6619 02:51I-ejenti Engumsebenzisi: Mozilla5.0 Windows NT 6.3; WOW64; rv:53.0 Gecko20100101 Firefox53.06619 04:476619 05:126619 07:28 