MrPutz

So I am not real tech savvy. How do I do Wherigo with a Samsung S7? I downloaded the "WhereYouGo" app onto my cell phone. But when I try to download cartridges, I get a "download error". I have gotten past the credentials part of things, I am logged in. Remember, I am not very good with technology, so give it to me in baby spoonfuls. Thanks. MrPutz.