Webhook won't work

Hi, I have created a webhook in my app

But, when I created a contact it did not work. the webhook monitoring is empty

My question is how can I connect this webhook that I have created to CRM contact so whenever user create contact, it will send request to my webhook?

When I tried to connect using oauth from app to account it says like this:

Is that because I have different account ID for my contact and my webhook?