I am trying to watch the Olympics from overseas. I have a VPN set up on my Mac (Express VPN) and using a friend's Fios account to watch. I had no problem watching a soccer game the other day using NBC Sports Gold (subscription service), but when I log into the NBC Olympics website with my friend's Fios login, it just puts me in an endless loop of re-entering her login, and I never get to see the content. Is there something wrong with my VPN? Or is it that NBC knows IP addresses for VPN servers? Or something else entirely?