I was just able to confirm mine (kept failing on app but finally got through on computer). Luckily, Dec. 3 was the date I needed, and it appears to be one of the first dates loaded. After multiple failed attempts, I got what I wanted -- dinner after 5 at Garden Grill for the 8:15 show. Now, back to bed!
What a painful process! Disney's website is unable to process. I select a time and go the whole way through the reservation process, hit Confirm and get the "We had to duck out" screen. Stopping ducking out, Disney! Stahhhhp! Not cool.