@Anonymous User if clicking My Account takes you to the homepage, you've logged in with the wrong username. It's possible to have multiple Sky iDs and only the one attached to NOW TV will work. If you've had Sky Broadband or TV in the past your browser may have auto completed your old username. Try other usernames you might use or the forgotten username link on the login screen. Also you could look through your emails for communications you've had with NOW TV and see if any of these include the correct one, or load the app which you've been watching on and check the settings to see which username is on that.