@Kent227 I recommend that you undo your calendar sync, wait a few hours, and then set it up again. VRBO recently had some massive changes to their programming, and it would not surprise me that the calendar sync may have been affected.
I remove and redo my calendar sync at least once a month just to ensure that I stay on top of the programming changes that can and do occur. Just as I review my listing IN DETAIL once a month (or 6 weeks) to ensure that pictures are correctly positioned, that amenity checkboxes haven't been added or removed and that my house rules and cancellation policy are in place.