Background App Refresh Denied

If the Background App Refresh is Denied or you cannot change the settings please check the following  settings on your iPhone:

Settings -> General -> Background App Refresh - On

 Settings -> General -> Background App Refresh -> Ski Tracks - On

If you are unable to change the settings:

Settings -> General -> Restrictions - enter your pin code.  Scroll to the bottom, Background App Refresh is under the "Allow Changes” section. Can you check that "Allow Changes" is on.