Extension is broken guys. Can't login, can't logout once logged in, and so you can't change anything. Everything works only a single time once you uninstall/reinstall the extension. But once you log in and make your selections, it reverts to its broken state the next time you start the Firefox browser. NordVPN, you need to spend less on ads and more on development, because ultimately it's the users who will determine whether or not to keep using (ie. $$$PAYING FOR$$$) your service.
Hello. We're sorry to hear about your experience while using our browser extension. It would be best if you contacted our customer support team via chat at support.nordvpn.com. They will take a closer look at your issue and help you solve it. Our team is online 24/7. -A.S.
