This is likely because you have GPS Mode turned 'Off'.
Please make sure you have Location Services in High Accuracy:
Settings > Location > Enable **Location** > Select **High Accuracy** mode
Hole19 has permissions to use location?
Settings > Apps > Hole19 > Permissions > Enable Location Permission
Note: If you are playing in Advanced Mode, Tap the ‘3 dots Icon’, go to settings and turn the GPS Mode toggle 'On'.