I'm having the same issue and it is terribly frustrating.
I 've clearned cache & restarted. Reset my modem. Called my interenet provider and restarted my service. Tried in different regions. DId a clean install of firestorm.. All with no luck.
I have an Asus laptop, Wireless, Windowns 10, Newest version of Firestorm.
Any help would be greatly appreciated.