I managed to get a Qobuz US subscription with a VPN set to USA. After signing up, no need for the VPN.
The only drawback is Google won’t give me the phone app, as I live in a non Qobuz country. Even when I’m in Europe or the US I can’t download it from the play store.
I did it about a year ago -whenever QB US started.
I think they can peep and see the country your CC is from-even thru PayPal. They hinted as much to me once in an email, and that might be the issue.
Although I’m paying with my local CC (not thru PP) and it didn’t seem to matter. Have you tried signing up with the VPN and directly with your CC?
I gave it a try… it worked, but while playing with Roon it will jump tracks, didn’t make it to play one song, not sure if that is because of the unsupported country…