@Whitbeck-Ridge-Farm0 How large is the workforce of your former employer? Did you know the guest personally? And do you have reason to believe that the company has a competitive interest in sabotaging your listing or spying on you?
It's not immediately apparent what the ethical conflict in hosting this guest would be (any further detail on that would be more appropriate to the locked Host Circle board) but if something in your history with the company makes you feel unsafe, you can try pleading your case with Airbnb via phone to get out of the penalties. But it's not a sustainable solution if the company is genuinely trying to send staffers to your home. If there's a whole group of otherwise legit guests that you feel the need to exclude, and you don't want to get shut down over discrimination issues, you'll have to turn off Instant Book going forward and vet your guests before accepting.