Does not work

It shows no digits at all no altitude.
All location service settings are on, like all the other apps.
Again ipad mini 2, deep in the Norwegian mountain forests, and no apple devices last long with accurate info. Even the compass. One day maybe apple will make something that works in the real world, nature.
Different ipads, iphone, ipod touch same thing. All settings open.
4g internet is not the problem.
Any one else brings an iphone and co, here, lets me use it, and gps and compass stop working.
Nature has piezo electricity from granite, and weird gamma radiation, millions of cos over minutes only, not hours. "Weird gamma" is different to gamma.

Sim1wwwwwww about Travel Altimeter & Elevation, v4.0.5