For reasons I don't understand, NordVPN can't recognize my Linux Ubuntu OS. I did as NordVPN told be to and ran:
sh <(curl -sSf https://downloads.nordcdn.com/apps/linux/install.sh)
After installing curl. Then I logged into NordVPN through Firefox. When I click on the blue Connect button after logging in, that is when I get the screen that says it can't recognize my OS.
install.shdo? Now that it's too late, download and inspect the script. Should you have run it asroot? I shudder at the idea, but choose your own risks.