If your guests did not receive the scheduled messages, please check for the following:
On the Guests page, verify the guest's phone number is correct and there are no characters in the phone field. (i.e. cell, guest name).
Check your SMS delivery hours under Settings/Messages.
Check the Property ID on the Property Guide and verify that it matches exactly with what is in your rental software.
Make sure there is a Destination Guide attached to the Property Guide.
Check the Automated SMS Sent under reports to confirm there was not an error when the message was sent.