NORD VPN is supposed to be one of the good ones. I would take it up with them, particularly if you have paid for it.
Otherwise, I have used IPVanish, which is a pretty good VPN but has some quirks, and isn't cheap. Now my security software, Norton 360, includes a VPN which I am trialling. It works, but doesn't have a lot of features.
My observation of VPN providers is that they offer the world, start out cheap, and over time as they see the real cost of running the service, jack up the price and reduce the speed available to you. So basically, you need to change VPN every now and then, to the latest and best. So find recent reviews if you want to change provider.