Tried NordVPN, but as soon as I installed it, at least 3 websites I visit regularly, including my bank, failed to work. Turn off Nord and it’s fine.
Sent them a trouble ticket, and it took them a couple days to even acknowledge my submission, but nothing about a fix or a workaround. I gave up, uninstalled NordVPN and got a refund, without hassle, for what it’s worth. Still not sure if that was good customer service or sheer repetition.
Came across a program called Windscribe, which was cheap to install (special deal, $50 for 10 years or something like that), and it has been working fine ever since. One of my regular locations stopped working the middle of last week. I narrowed down the problem, submitted a trouble ticket, and it was fixed by the time I woke up the next morning.
Did you try switching to a different server within your VPN network?
I had this same problem with a well known brokerage company I used to use. When I tried different VPN servers often I would find one where I could get in. I've been told companies sometimes get wise to what user IP addresses are VPN addresses and block those out.
You need to make sure that your VPN is actually working. Many retail and most financial sites have issues with VPNs. This is for security. This includes Amazon, the Bank of America and most of my credit card issuers.
https://lifehacker.com/how-to-see-if-your-vpn-is-leaking-your-ip-address-and-1685180082