Both Chrome and Firefox extensions just keep having the login issue , extensions not working, log out or server shut down just few hours, the only way to fix is reinstall but for now, this way not help at all. NordVPN team never care about it, I had and reported this issue very long time ago but it never be fixed, I read comments and found out I'm not the only one. The worst VPN service I've ever used, my payment still remain half of the year and now I'm using another VPN service, total waste of money