I’m on iOS 17.1.1 using Safari. I also have Proton VPN enabled in the states but if I try to visit any page on the website I see this:
If I disable it, the page will load.
Edit: as per a comment, this may not be a VPN only issue.
Additional edit: Reddit has written an official post stating it was an issue after production code deployment and was reverted
More likely, they blocked IP addresses belonging to a cloud service provider which happened to also be used by the VPN service.