I tried to install my mobile app through AlphaLaunch on 4 different Android devices.

Google Pixel Phone Android 8.0 (Oreo 2017): AlphaLaunch and my application installed just fine.
Samsung Nexus 10 Tablet Android 5.1 (Lollipop 2015): repeatedly errors when downloading my application files at some point or another
Generic Tablet version Android 4.1 (Jelly Bean 2013): error installing AlphaLaunch
Samsung J7 Phone Android 6.0 (Marshmallow 2015): Unable to download application with same type of errors as Nexus 10