Keep trying . . . it has been pretty difficult to get some ADRs. My trip starts 11/11 . . . I got most of mine the at 180 days, but there were a couple I couldn't get. I kept trying and now I have everything I want (11 day trip).
Things open up all the time, it's frustrating, but keep trying. You can call. Also, if you are trying to book any Downtown Disney restaurants you can call them direct (Raglan Road, TRex).