This seems to be a SUPER WEIRD technical mistake.
When I checked my listing this morning, my review count had changed from 36 to 11 for one listing (another inactive listing went down from 300+ to 85!!!). In 13 years of hosting, this is a first.
What's going on d@Airbnb????
Even odder is that the reviews are there when you click on REVIEWS - all 36 of them. But the number showing is 11 and it's affecting my home's rating - which went from 4.89 to 4.82.
I'm furious about this and WAITING for Customer Support to contact me back. Can anybody shed some light?