I can't get USO either, being in Canada.
But when I click onto download, it's saying it's not a trusted site and can damage my computer. Bit worried about that.
Nah don't worry about that, spotlfux is just a VPN that masks your ip address and gives you a US one, it's perfectly safe, it has reviews on CNET and such as being one of the best free ones.
It's also a great ad blocker