We are not booked on certain dates yet when a friend keeps trying to make reservations the system keeps teling her its booked. I have triple checked my setting....Any ideas?
One thought that I have is related to any settings you might have that block the day before and after a booking. Do you have that? These dates are automatically blocked and would interfer with a booking that includes these dates. Alternatively, as @Emiel1 has posted, you may need to give another couple of days.