Why can't I be redirected to the authorization page after re-authorizing, and why can't I receive any webhook events either?

All configurations are correct. When a user binds for the first time, the authorization page redirects normally, and Webhook events can be received successfully after binding. However, After I successfully complete the binding and then revoke the authorization
question1:

re-binding again does not redirect to the authorization page — it redirects directly with no prompt.

question2:

Most importantly, I cannot receive any Webhook events afterward.

Please help me, Thank you very much.