This exact same thing happened to me. Airbnb claims someone reported a recording device, and Airbnb unilaterally suspended my account and ALL listings at 4 am on a Sunday morning. I confirmed I have no recording devices, but "Tom" said I still had to confirm in my listings that there were no recording devices.
Even after doing so, my account remains suspended, and "Tom" has now become complete non-responsive. I'm now on day 5 of my account being suspended, and any attempts to get Airbnb to assist in unsuspending my account and reactivating my listings are immediately closed, stating that only "Tom" and his department can resolve the situation.
This is embarrassing for Airbnb, and really seems to demonstrate just how much they truly value us as (super)hosts. I'm at least going to begin co-listing my properties on other platforms, as clearly I can't trust Airbnb to do the right thing, and I'm now out thousands of dollars in lost booking (and counting...). It's ridiculous, and Airbnb should be ashamed. I thought they were better than this.
-J.R.