Hi Jici,
I attached the wrong screenshot, I have updated my post.
I tried both of your recommendations and it didn’t work.
When i check the response in dev console, it says "
[0, {“data”:“PROBLEM_IN_WEBHOOK_REGISTRATION”,“status”:“failure”}]
I also tried to run a similar test in Postmark and when I removed “version-test” from the URL, it did not recognize the address.