Case
This case appears in the queue of your project connected to your Twilio Whatsapp account
Reason
When Users are using a free Twilio account , they'll have the Sandbox number as a common number which is +1 415 523 8886, but with different Join... texts which is used by Twilio to identify the user as you can see here, and the same sandbox is connected to our back end using the HTTP POST method.
Solution
To have an independent project away from all the trial users you'll have to sign up for a in the WhatsApp senders section to turn your Twilio number into a special sandbox that you can then set the HTTP POST to our addon.
You can follow the steps to create a private sandbox here