Even when I'm using a VPN (ExpressVPN), I still can't access certain websites. But when I'm using Tor browser it loads them without a problem. So this must mean that my ISP somehow knows I'm trying to access those sites, even if I'm using a VPN. How is this possible?
I tried using ExpressVPN's DNS servers or the 22.214.171.124 Cloudflare DNS server, neither works.
I can use Tor for those websites, so that's not the problem, but Tor is slow so there are times when I would rather use a VPN or use internet outside of a browser, and it seems in those cases my ISP still knows what I'm doing, which is a problem.