I have a Faceboot Failure:
Your Webhooks subscription for callback URL https://myurl.de/wp-json/gruppo_bot/start has not been accepting updates for at least 17 minutes. Please verify that your callback server is functioning. Visit our reference documentation to learn how to update your callback URL.
If your callback URL is still failing after 8 hours your subscription will be disabled. To reactivate, just make a POST request with the same parameters or visit the Webhooks tab in the app dashboard.