No protection from airbnb

Host for 5 years in Fort Lauderdale, Florida. Hosting one of the biggest events of the year. That evening client complained of mold. Even though I knew there was no mold I told them that I would get it professionally checked in the morning. Client showed photos of a dirty wall a/c unit. Airbnb cancelled the booking before I was given an opportunity to carry out tests with no payout, I had an expert who came in and made it clear there was no mold and that the a/c unit just needed cleaning. Two weeks later I am still trying to get a payout. Guests can say anything they chose and hosts have zero protection.