This hotfix temporarily disables rescue dungeons until we are able to figure out what's going on. Even before Update 28, rescue dungeons had some occasional bugs that prevented people from finishing the dungeon, and Update 28 introduced even more.
This is really embarrassing folks, sorry there are so many problems with this build. I can only ask for your patience and promise that fixing this stuff is important to us, and we'll get it fixed as quickly as we can.