Android App not compatible with devices that sideload Google Play

Question

I have an app which has been deployed to Play and is compatible with any device running 2.1 or later; no special restrictions or requirements defined in AndroidManifest.xml.

Answer 1

If you have any in-app products or if you are selling the application for money then Google Play automatically filters you out of certain countries it doesn't support billing for. You can email Google to ask here.