Follow the steps here to troubleshoot
If Gaia GPS can't locate a GPS signal, follow these instructions to make sure location services are turned on.
App Not Respoding
Force close the app completely by double tapping the Home button and then swiping up the Gaia GPS window.
If shutting down the app doesn't work, try restarting your phone.
- The compass will not work if you are in a car or if you are near metal or magnetic things.