So I downloaded Amazon Underground however it isn't showing up in my apps BUT IS showing under settings, apps, application manager. Can't seem to get it to work. Help greatly appreciated.
Do you have an Amazon app installed? It may just show up as Amazon (not Underground) but you should still have access to the Underground section there.
No problemo! I had the same 'problem' at first, but my tablet ended up with two Amazon apps, that's how I figured it out and didn't sneak up on me when I installed it on my phone.