Well, I gave up on making the Hoop-de-Doo ADR, but my DH took over and kept on trying. On about his 4th or 5th try, it finally went through. He got the confirmation email more than 24 hours after the request, and to my relief, he only got ONE confirmation (I was afraid we'd get about 6 or 8, with the credit card charged accordingly).
You might just want to call and make your ADR's that way.