Troubleshooting N8N Webhook Issues with Dust App Integration

Hey thank you for your amazing job, french people are definitely the best ones! I have a question for you: I got troubles to link a dust app with a N8N webhook. In the app I pasted the test URL. Everything is on success when I press run. In n8n node, nothing is happening, it is just waiting for the post command to come. Do you have any idea to help me with this? Thanks!