Looks like GPS is OFF. Let's fix it!

Please be sure to try under the open sky and give GPS receiver up to 10 seconds to find satellites. If you are in a train, please try to get as close to a window as possible to give GPS receiver a chance to catch satellites.

If indicator shows OFF even under the open sky, please check that iPhone's (or cellular iPad) Settings>Privacy>Location services are ON. Then inside location services check that the app has its location switch also in ON (either When In Use or Always) position.

In rare cases, to get GPS receiver working properly, it is required to restart the iPhone (or cellular iPad) completely by powering it down (long hold on the power button and confirm the switch off) and then on again (by pressing the power button). Then please try again under the open sky.

Please note that iPods and wifi only iPads don't have GPS chip built in and require external GPS module for any GPS app to function properly. There are many, you can find a comparative review of two available modules here.