Problem follow_redirect

Good day!
There is a problem. After payment, the payment system will send a response to the URL https://******/payment about successful payment.
Payment system support, says that the first time they receive a response from the server

follow_redirect ‘: False,’ redirect_limit ': 20} [response]: None None

and sends 2 request. As a result, the answer comes from them 2 times. What could it be?

The rules have
Always Online: On

Firewall rules

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