Webhooks not firing



Hi guys
Customer attempting to get new contacts from Hubspot flowing through to internal system.

Have configured the webhooks for Contact create and delete – but they don’t seem to be firing (the test button does work correctly – but creating a real contact in Hubspot doesn’t call the webhook service).

What could be causing the issue of hubspot not invoking webhooks on Contact create / delete?

Things we have already tried:

SSL certificate & HTTPS
Authenticated the app with the Metro instance either by API key or client key/secret so that it’s listening there not on your developer account.
Generated refresh tokens
I have tried the requestb.in – experiencing same results: the test webhook calls do come through ok but the real ones don’t.

Would appreciate your help!