Similar story here. Guests got caught having extra vehicles and visitors at the property, made up a story about indoor cameras, and my account got suspended until Airbnb completed their investigation. It wasn’t until both reviews were posted 4 days later that I knew what their made up story was.
The good news I was cleared of the investigation in just a few hours. I’m also a superhost, guest favorite, with 7 years and 67-5 star reviews, and I documented everything in the Airbnb messaging chat, during Star outdoor videos, and after stay inspection pictures- trashed and filthy house.