403 status code response

I would like to use a payment gateway. When the payment success, the payment gateway will post a datafeed to my server endpoint but Cloudflare return 403 to the payment gateway. I indicate 2 point is not my server problem.

  1. no any access log about the request in nginx
  2. when I turn off my server, it still returns 403 status code

I have no idea about this problem, please help!!!

The request is blocked by Cloudflare’s security layer, you would need to whitelist the IP address where the request originates from.

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