To Check: Do the individuals not receiving the SMS have a valid phone number?

When a group is chosen for an SMS, your ChMS will tell you that individuals do not have a valid phone number. These individuals' accounts must be updated with a valid phone number to receive any Contact SMS or Voice messages.

If admins are experiencing issues with the Contact SMS through Twilio not working, be sure to check:

• Under the General Settings → Services, is Twilio enabled and both the Account SID and the Auth Token input?
• When the Account SID and Auth Token have been input, the number assigned to their account will appear. This number MUST be highlighted in blue and saved as highlighted for the number to work. This is because admins have the ability to purchase multiple numbers under the same Twilio account.