Hi Rob,
I have some more information: Reading the developer.android.com documentation regarding Testing IAPs (https://developer.android.com/google/play/billing/billing_testing.html), I must have the APK within Alpha or Beta channels, with testers assigned. I have done this, but still require the Production Channel Application to be ‘Published’ before testers can access the Alpha or Beta channels of the application. I was not aware of this, thinking that IAP testing was available from production channel, even if the application was not published.
I can only blame myself for wasting your time, my sincerest appologies!!
I will publish our application *without* the IAPs on the Production channel, upload a version *with* IAPs on the Closed Alpha channel, then I should be able to test properly.
I fully understand your prediciment of “Helping people with what goes on inside the various vendor’s portals is tough because I can’t see what you’ve done”. I’ll do what I said above, and will report back in the next day or two.
Many thanks once more,
Chester