The reason why some apps work is they've been whitelisted by the manufacturer, not a choice by the developers (except maybe a choice not to pay to be whiteliste

The reason why some apps work is they've been whitelisted by the manufacturer, not a choice by the developers (except maybe a choice not to pay to be whitelisted?) If you're not whitelisted, there's very little you can do except for ask users to take various manual steps to change operating systems.