[16.0][mail_gateway_whatsapp] Can't receive messages

[flalexg]

Module

mail_gateway_whatsapp

Describe the bug

Since Meta introduced version 21.0, I'm not able to receive messages into my Odoo

To Reproduce

16.0:

Steps to reproduce the behavior:

1. I follow the steps to integrate the weebhook. (I also reproduced the webinar from @etobella
2. My Weebhook is integrated.

3. I send a message and I don't receive anything.

Expected behavior
Receive a message in my Odoo.

Additional context
I send messages from a postman to my phone to check if its the token, but it's not.