The dining number is 407-wdw-dine.
The new website is slow and freezes a lot. I made one ADR tonight, only to find that it hadn't "taken" the different date I'd put in and the ADR was for the wrong night. Cancelled that one and started fresh to make a new one. It took me a couple of hours to accomplish that, off and on, walking in and out of the room waiting for the pages to load. The new site is terrible.