I just checked , actually worked from my side , but it can be due that FF got an update to Https . sometimes it also happens that a country or a provider locks Clouds in countries or gets into a range of locks in such a case you would need to use a VPN , browsers like Opera have VPN for free.
I also experienced it last year for 2 month my Internet provider locked File factory downloads and others it was a real hassle .
anyway I replaced the link with a new upload so you can try again