looks like you have bookings possible through August 30. after that, everything is blocked. Did that guest perhaps look at September, when everything looks blocked?
Perhaps your setting is on "dates unavailable by default" ?
Go into your calendar >> availability settings >> booking window, and make sure the settting is on 3 months or longer.
It also looks like you got instant booking on. Did you perhaps cancel a booking you had and then the calendar got automatically blocked because you did that?
Good luck!