SMS Acknowledgment Issue Using Twilio

I am working on a Ignition vision project where I need to acknowledge alarms through SMS.
Whenever alarm occurs I receive an SMS (attached) but I am not being able to respond to that SMS.

Process I have followed so far:

  1. Setup a trial account on Twilio.
  2. Made my ignition gateway publicly accessible.
  3. Configured Twilio account on Ignition. (Public Hostname: [IP of my gateway] | Public Port: 8088)
  4. Created a notification profile and enabled SMS acknowledgment.
  5. Configured a notification pipeline.
  6. Configured an alarm on a tag and passed notification pipeline in Active and Ack. pipeline fields.


Do I need to make changes on my Twilio console? a function or a webhook? I am new to Twilio and would really appreciate a detailed response.