I have instant booking turned on for those whose identity has been verified and that have a recommendation from another host. A young man is requesting to book my home in Dallas, TX for 4th of July weekend. I have a 3 guest max rule. He rented from someone in California in March this year. This is what the host wrote in his review,
"XXXXX and his friends were very polite and respectful, took care of the place and Left it neat and tidy. One small incident... He and his group overstayed past checkout waiting for his transportation to pick him up. They didn’t communicate ahead of time that they would need late checkout. When asked to leave he was still very polite and respectful and left shortly afterwards. AirBnB discussed this with him later and he now understands."
After the host wrote the review I wonder if he answered/clicked "did not recommend" to other hosts. This would explain why the guest could not instant book.