Epic Mobile team sees "Resource Not Found" error when downloading my game

Hi!

We are trying to put the game The Ouroboros King on the Epic Mobile Store (I can share SKU ID and AppleID if it helps).

We followed all the steps: the game has been notarized, tested on iOS (via TestFlight), and associated with the Epic Game Store alternative marketplace in App Store Connect. After all of that, we can see the binary available on the Epic portal for the Epic Team to test, but when they try to download it, it says App Not Available.

We've tried multiple things with them, but it seems stuck, and they told us to try with Apple Support. So here I am!

Their engineers see iOS making an API call to fetch the data to display for the install confirmation popup.

But it's failing with:

          "errors": [{
                         "id": "ORHPEIOCABRJX6DYPA6SJSLGK4",
                         "title": "Resource Not Found",
                         "detail": "Resource with requested id was not found",
                        "status": "404",
                         "code": "40400"
          }]

Can someone have an idea on how to fix the situation?

Thank you!