Please share your code where you are adding products. Also, please provide the device logs. Are you testing in Closed testing? That will ensure that everything is set up correctly. Add your testers and provide them with the opt-in URL. On their device, they would browse to that URL, accept the testing invite, then redirect them to Google Play to download a private version of your game. Also, please provide the adb logcat logs, they will tell you which products are not available in case you misspelled them https://discussions.unity.com/t/699654 I generally create 1 or 2 additional testers using free email addresses.