Phone track Android App stopps logging


I’m using the Phone track App on my new Phone and somewhen it will stop logging my Position. On my old Phone with gpslogger it still works, thus there must be some problems with the Android App. Do you have any Idea how to fix it?

I have a Sony Xperia Z5C with Android 7.1 and it works Like a charm, except the map in the App.
With my Xperia XZ2 Compact the map works, but it stops logging.