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G has given an answer!
Thank you all for posting updates here, and helping each other try to figure out what's going on with your reporting. I apologize that I didn't see this thread sooner.
The short answer is yes, there is a significant delay with reporting displays right now, which may make it seem like your stats are way down. Don't worry -- the eng team assures me that the correct stats are being recorded in our database, so no one will lose revenue.