We created a WhatsApp Business Account (WABA) on our demo environment and everything works as expected. We then disconnected that WABA from demo and connected it on prod which has a different webhook url. No webhook events are being sent after switching which facebook app we connect with.

We then tried creating a fresh WABA on our facebook business (new number) via the whats app embedded signup flow (on prod) and we are still not receiving webhooks.

How are we supposed to connect a WABA to our production (live) app for use in the app review when we don't receive webhooks for incoming messages? What piece are we missing?