I had a guest do something very similar. Canceled on Day 18 of 72 day stay. I was paid for first 30 days. Guest is obligated to pay for days 31-48 according to long term policy requiring 30-day notice. Airbnb said they tried to collect payment from guest but unsuccessful. I rebooked only 2 of those days. Payment of $406 shows pending from guest, but Airbnb says they will not pay me unless they collect from guest. I don't understand. If Airbnb has an automatic long term policy, why did they not collect the money to enforce that policy beforehand?