Had the same problem. Got up at 2:45 a.m. to book Palo brunch for Oct 15th cruise. I also got dinner, but brunch was gone. What was kind of peculiar was that I logged on 45 minutes before someone else on our cruise and they got the brunch offered to them at 3:30 a.m. Hmmmmm????
I've been trying every day since...just in case.