Hey.
I had a maybe similar issue. When I was working with the WhatsApp trigger node, the web-hook was only responding to the messages sent to the test number, so anything sent to the production number was being ignored.
I finally found out that you need to subscribe your production number to the WABA (WhatsApp Business Account) with:
curl -X POST \
-H "Authorization: Bearer $TOKEN" \
"https://graph.facebook.com/v22.0/$WABA_ID/subscribed_apps"
Where $WABA is your Whatsapp Business Account ID for the production number found in the app dashboard in the meta developers platform