@Adam1195
While it's morally and ethically repugnant that Airbnb effectively shields, harbours and protects countless thousands of illegal renters on their platform - such as your tenant - they are completely within their legal rights to do so, by hiding behind Section 230 of the CDA (Communications Decency Act, which absolves them from all responsibility for content (ie listings) posted on the site by third parties (in this instance, your tenant)
The company further absolves itself by posting guidelines for hosts to (voluntarily) follow, such as those below, but chooses not to implement any form of sanctions, penalties or bans on those who wilfully opt to ignore them, even when it can be proven that the host is in breach of state and/or housing laws and regulations
"When deciding whether to become an Airbnb host, it's important for you to understand the laws in your city. As a platform and marketplace we do not provide legal advice, but we want to give you some useful links that may help you better understand laws and regulations in Florida
"It's also important to understand and abide by other contracts or rules that bind you, such as leases, condo board or co-op rules, HOA rules, or rules established by tenant organizations. Please read your lease agreement and check with your landlord if applicable"
State of Florida - Airbnb Help Centre
https://www.airbnb.ie/help/article/2371/state-of-florida"
So while Airbnb do have themselves covered every which way legally, they have also attracted a huge amount of negative publicity recently - in more ways than one - and are in a rather precarious position at the moment. Any further bad news stories leaking out about them at the moment - particularly in the current COVID-19 climate - would be extremely inconvenient, and highly unwelcome.
With that in mind, your best bet here would be to exploit that weakness, and leave them in no doubt that you're about to furnish a report to the Governor's office, and take your story to all the major local and national media outlets and news channels - and do so, if necessary. Doubtful it would come to that though - much more likely your strong and clear statement of intent will spur them into rapidly removing both host and listing from the platform.
Best of luck!