NSPanel Pro - geting Home Remote Pro without Google App Store

Hi there.
I’m trying to use The Home Remote App on NSPanel Pro - Android-based wall switch. I’ve managed to get apk file and it runs on it. However I would like to purchase a Pro version to remove the banner. But NSPanel doesn’t support Google Play Store, so I can’t use in App purchases.

Any solutions how to make it work?

This is the most recent discussion on the matter: Apk possibility

It doesn’t seem like there is a solution at this time.