The developer pulled support for this. It works for a few minutes then you need to install a new app…

I paid for this app and now the “Free Upgrade” window keeps popping up and there is no way I can close it. So the app is totally useless for me. The free upgrade nagging will take you to the main app that consolidates all world maps into one app. I don’t like the main app because you have to drill deep into setting to view any maps (very inconvenience). I paid for this app and they should just leave me alone to use this app.