I just checked and found availability at several resorts. Are you looking for something for a large party (my search was for a party of 2 adults, 2 kids?)
The “build your vacation” feature doesn’t always work. If you use that, it isn’t showing any rooms at all. When you get the result with all the hotels listed as no availability, click on any hotel. From there you can use the change feature & click “all resorts”. The real availability will show up.
Or you check under the resorts heading, and again click on any resort & search from there. Crazy Disney IT.
Also, clear your cache, cookies & history; virtually every travel & shopping site now tracks you, and "remembers" what you searched for previously, etc. Starting fresh can sometimes change the results.