Unable to test with a testing account on Android (Google Play)

I've now been banging my head against a wall with Google Play's Alpha and Beta testing system for a day or two.

The thing is: I can download and test my game through alpha/beta with my primary email which is the owner of the developer account, but all IAPs say "The publisher cannot purchase this item." when purchasing, which, according to documentation, is valid since the owner of the developer account can't do it.

So therefore I created tester@domain.com for myself, which I've added in multiple ways as a tester but can't download my game through Google Play. Here are the methods I've tried on both Beta and Alpha: - Open testing (no tester list, just an opt-in link) -> no luck - Closed testing with email list -> no luck - Closed testing with Google Groups -> no luck

What happens is when I follow the opt-in link is that first it opens a page where it says that I am a tester and I should be able to download my game following a link. But then it just opens the front page of Google Play and my game can't be found.

I've also created a Google+ account to my tester account, I've set my testing account as the only one on my device, etc...

With my main account on device, following the same link the game can be found and downloaded.

Any help? Thanks!