Sample test requests are working fine. The same webhook is functioning correctly for other accounts. We are not receiving delivery receipts. We are not receiving any real incoming although we are receiving Sample test request.
Follow the steps below to resolve the issue:
Step 1: Use the link below to subscribe to the app first: https://graph.facebook.com/v18.0/{business_id}/subscribed_apps
JSON : {
"messaging_product": "whatsapp",
"pin": "Your Pin"
}
Step 2: Register the phone number using the link below: https://graph.facebook.com/v18.0/{Phone-Number-Id}/register
JSON : {
"messaging_product": "whatsapp",
"pin": "Your Pin"
}