I know nothing of the interface, but it looks like it is simply asking for the password. Isn't Quest 360 wanting to verify you have an account. Maybe it is two-factor authentication. Have you spoken with Quest 360. It sounds like it is associated with AC for sure, but it seems that it is Quest wanting verification. Just a guess.
At least they give you > 80 minutes to think of a password. Quest doesn't give you some sort of "Forgot Password" prompt?
