Short answer: When a Make. com custom webhook doesn't receive data, the sender is usually calling a different URL, the scenario is off, or Make is rejecting the request. Check the URL first, then open the webhook's Queue and Logs tabs to see whether requests arrive at all.
Source: [Dev.to](https://dev.to/flowpaja/makecom-webhook-not-receiving-data-how-to-fix-it-24b7)