Look out for this!
Recently had a guest who wanted to cancel a nonrefundable stay. I told them if they cancel and I get a new booking I’ll refund them the amount. That obviously wasn’t good enough because guest started sending modification requests for lesser time stating that they will cancel after but want to be able to get as much money back as possible. They attempted to modified their 7 day booking to a 1 day booking trying to get back $1300 from what was suppose to be about a $1500 payout. I denied it and they attempted to send 2 more request that got denied. It was at this moment I let Airbnb know what was going on. They told me they notated the issue and that also guest are only able to send 10/11 modification request before the system blocks them for scamming/Fraud behavior.
Just wanted to share this story to be very mindful when someone sends you a modification request.