Got a very strange problem. I was working on integrating in-app purchases, and everything was going fine. All in-app products showed up with QueryInventoryAsync. Then when I came back to the project the next day it suddenly started returning null. Now even the sample provided with the component always returns null. Adding ReservedTestProductIDs.Purchased or any of the other test product ID's makes no difference. Shouldn't it always at least return the test products?
Any ideas about what could be going on?