An appointment is missing a customer or address
Some sources — especially plain calendar events — don’t include structured contact or address details. Open the appointment on the Schedule page and add the missing customer phone/email and address. Appointments missing required details are collected on the Needs attention page.A customer didn’t get a text
Check, in order:- The appointment has a customer phone number.
- The relevant trigger is turned on (Triggers page).
- The current time is within your messaging hours.
- Text messaging is enabled for your account.

