If you have SMS notifications for instructors enabled and an instructor says they didn't receive a message about a reported absence, a cancelled lesson, or a make-up sign-up — check two things.
Check the instructor's phone number
Go to the Instructors tab and open the instructor's profile. Make sure the Phone number field is filled in and contains the correct number.
If the number is wrong or missing — correct it and ask the instructor to check whether the next notifications come through.
Check the SMS points balance on your account
If the instructor was receiving notifications before but suddenly stopped — the likely cause is that you've run out of SMS points. SMS messages are sent using points from your pool. When the pool runs out, messages stop being sent.
Go to Settings → Communication and check the SMS settings section. You'll see the number of available points there.
If you've run out of points, you can purchase a new package — read more about it here.
