Why is my domain not receiving a refund webhook from Shopify?

I work with hook create refund of shopify
I have 2 domain redirect to 1 server
[https://gamemini.online/refunds?api_key_refund=](https://gamemini.online/refunds?api_key_refund=Z7L6EWVVD3TR7FJIMA@5Rrzk3CJdBdMKKn@4j(HNN)[api_key_refund](https://gamemini.online/refunds?api_key_refund=Z7L6EWVVD3TR7FJIMA@5Rrzk3CJdBdMKKn@4j(HNN)
[https://checkout.comfort.to/refunds?api_key_refund=](https://checkout.comfort.to/refunds?api_key_refund=Z7L6EWVVD3TR7FJIMA@5Rrzk3CJdBdMKKn@4j(HNN)[api_key_refund](https://checkout.comfort.to/refunds?api_key_refund=Z7L6EWVVD3TR7FJIMA@5Rrzk3CJdBdMKKn@4j(HNN)
I don’t know why domain checkout.comfort.to can’t get hook from shopify maybe it has error with ssl
But when i check it on https://www.ssllabs.com/ssltest/index.html iget score B so pls let me know why this domain can’t get webhook from shopify Thank