Having issues for the past days trying to make the IAP work on TestFlight for my 1st game app. IAP works fine in Unity Editor (fake store) and also on Google Play (internal test track).
I don't receive any product prices from the apple store and the buy buttons have no effect (no callbacks on ProcessPurchase or OnPurchaseFailed since I show popup windows for both scenarios).
Below is the status of my app and IAP :
From other similar threads everything should be ok and working as TestFlight doesn't require the IAPs to be submitted nor it requires for sandbox users to be manually created.
Any hints on what to further test or how could I check logs/warnings/errors are much appreciated, thanks.
Tools used : Unity 2019.3.0 (IAP 2.0.6) and XCode 11.3.1
Update 1: OnInitializeFailed() is called with NoProductsAvailable err