We've had two issues with how the response rate is calculated. Just wanted to let others know this is an error on the Airbnb platform and not a lack of responses from hosts.
1. We received an inquiry that looked like spam. We immediately marked as spam and contacted Airbnb Support to let them know. The inquiry disappeared from our inbox once it was marked as spam. A day later, our response rate dropped. We again contacted Airbnb Support and they said we had not responded to the inquiry by either accepting or declining. However, we couldn't have done this if we wanted to because it had disappeared from our inbox. Airbnb Support provided no solution to fix the drop.
2. We received an inquiry and within just a couple of minutes we received an instant booking for the same night. We went back to the initial inquiry and we were unable to respond because it had already been classified as "not possible." It gave us no option to accept or decline. And the next day, our response rate dropped. Again, we have received no support to fix the inaccurate response rate.