@The-Pines-At-West-Bay0
It useally should work as described by you.
The only reason i can think of it fails can be:
- The price per night goes below minimum
- Your settings (lenght of stay etc..prevents the desired change)
- the new check-in date is current date
- You changed check-in date, but did not select check-out date (again)
Maybe try a two step change:
- First change the dates.(guest need to accept)
- If i works create a second change adjusting the price (guest need to accept again)