Twilio WhatsApp Alarm Notifications Acknowledgement

I am setting up Ignition 8.3 alarm notifications using Twilio WhatsApp and have outbound WhatsApp template messaging working, but I am trying to understand how acknowledgement is supposed to work with WhatsApp templates.

The issue is that the WhatsApp template message does not include the usual Ignition alarm acknowledgement instruction, such as:

Type 12345 to acknowledge this alarm.

With normal SMS alarm notifications, Ignition includes an acknowledgement code so the operator can reply and acknowledge the alarm. However, in the WhatsApp notification block I don't see a way to do that.

I do have this setting enabled in the Alarm Notification Profiles page

Any guidance from users who have implemented Ignition alarm acknowledgement over Twilio WhatsApp would be appreciated.

Have you explicitly configured the inbound settings on your defined Twilio acount?