When I click Join this Course on the introduction to GitHub page, The screen refreshes and displays a pink bar with " There was an error registering for this course. Please reload the page and try again."   I am signed into Github at the time (as you can see from the gravatar.) Unfortunately the error message doesn't state what the problem is and reloading and attempting to rejoin doesn't fix the issue. Issue occurs in both Chrome and ie. I do have 2fa enabled on my account just in case this makes a difference but as I'm already logged in I doubt it? ... View more