How to retrieve Hide My Email address for NordVPN subscription through Apple?

I subscribed to the Nordvpn service through a "hidemyemail." I needed to extend my subscription, so I paid the amount through Apple, thinking that Apple would eventually use the "Hide My Email' process. Unfortunately, I did not receive the invoice, as I deleted "email" from "Hide My Email." I had written to Apple as well as Nordvpn that my subscription has been paid, but I have no access. However, Apple denies it, and I am now looking for a refund, but unfortunately, it's been denied. The problem is that I don't even know the Hidemyemail address.

NordVPN:"

Thank you for your reply.

Unfortunately, we can not accept this receipt. Please note that this is the receipt confirming your subscription and we need the payment invoice, where the order ID is present along with all of the other required information.

If you can not find the invoice, we suggest contacting Apple App Store directly and asking them to resend it.

[Re-Titled by Moderator]