Amazon Underground App

I've added the Play Store and Play Services from this post

http://forum.xda-developers.com/show....php?t=3206603

Anyone have gotten the Amazon Underground app to work. I've tried downloading it from the app store and it doesn't install. Tried downloading the apk and still doesn't install. I removed the Amazon shopping app with titanium and tried downloading and still won't install. Anyone know how to get the Amazon underground app to install?