My experience re: accessing Hulu, in AnyStream, with NordVPN.
NordVPN, set to a U.S. server, has to be active.
To the time of writing, NordVPN has proved to be 'hit and miss' in successfully connecting with Hulu i.e. several attempts - each using a different Nord U.S. server - may be required before Hulu plays nice in AnyStream. This is strictly a NordVPN server issue; Hulu identifies, as VPN connections, a high number of Nord's U.S. servers. No such problem exists, as yet, with Prime, Disney, and Netflix.
The above is the only issue I've had while using NordVPN this last year or so. That said, I don't recommend the NordVPN service for anyone considering signing-up to a VPN service.