We have created an app 'Webhook Notifications with JWT' for missed calls and voicemail notifications. We have authenticated the app using JWT auth. The subscription's ID is 8172fec1-45ed-4e20-9ca1-af577793d61b
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The delivery address in the webhook is ngrok. The webhook seems to work perfectly but then after some time it gets blacklisted.
The reason is 'Webhook responses with code: [404], reason: [Not Found]'. Is there any way to check the reason behind a subscription getting blacklisted? And how do I keep my subscription from getting blacklisted?