This happens quite a bit when trying to use coexistence with WhatsApp Business inside Make.
It’s usually not that the scenario is wrong it’s more about how the number is configured on the API side.
Coexistence can be a bit tricky because it depends on how the number was previously registered and whether it’s fully migrated.
Most people miss a small step during setup and it silently breaks the connection.
Quick question are you using an existing number already tied to WhatsApp, or a fresh one?