[teeedubb]

You have the steam app installed and it runs ok outside of kodi? If yes, then enable the debug log (wiki) in kodi, attempt to run the addon, in the log file search for script.steam.launcher: attempting to launch: and run that command in a termnal app. BTW, the android app (atleast last time i tried) didnt run any games, and was only a thin steam client where you could chat, browse the store and some other things. If you want to stream games I think you need something called moonlight or limelight.