@ed95 Thanks for looking into this.
This is happening on a real device (LG Nexus 5, Android 6.0). Admittedly old, however a good device to test our apps on to make sure we support a wide range of devices.
The only difference I found was setting the minimum API sdk version to 23 or leaving it blank.
With 23 the app is blank, with the default it’s working correctly.
Leaving it blank solved the problem for now. The only issue I see is people on API version less than 23 downloading our paid app from the Play Store. Hopefully I can find a way to prevent that.