Timer got to zero, got stuck, did some weird blinking, finally let me in. I got kicked out though but made what I needed to for my most immediate trip.
One trick if you can't sign in - Go to "make dining reservation", find a date and time that is open - click to make it. It will ask you to login, cancel once logged in and tada you are good.
For those of you who are in, did you have to go through the login page again? I'm wondering if those of us with the castle aren't "logged in" yet and that's where we're stuck.