@Petar4 -- You probably received and approved a pre-approval request, not a booking request. In the former case, the guest has merely made an informal inquiry about availability and whether or not you're willing to host them. If you approve that, they then have 24 hours to book. (Note that your calendar is NOT blocked during that time, so other guests can request to book, etc.) Most of the time, people who send this type of request are just window-shoppers, who are probably sending similar requests to multiple listings. After they see who will accept them, they choose one to actually book with.