Fix WhatsApp CRM Message Delivery -- 2

I have Meta-approved utility templates in place and my internal CRM is firing HTTP requests to the WhatsApp Business Cloud API, yet no customer ever receives the messages. The API calls look clean, no error payload is returned, and the Meta account is fully verified.

At this point I have three unknowns:
• The recipient numbers may or may not be officially opted-in (I need clarity on how to confirm this programmatically).
• There is no visible error coming back from the endpoint, so any silent failure needs to be surfaced through logs or webhook callbacks.
• I may be missing a required header, parameter, or handshake step inside the raw HTTP request.

Your task is to inspect the current request flow, trace the delivery path in Meta’s developer console, and pinpoint why the messages stop short of the handset. Once the root cause is found, I’ll need the corrected request format or configuration change documented so my team can repeat it reliably.

Acceptance criteria
• A sample outbound message from the CRM is delivered to at least one opted-in number.
• The fix, whether it’s a code snippet, settings update, or opt-in procedure, is clearly explained and packaged so we can apply it to production.