This tutorial requies that you have already received your site code that looks sort of like this - aB1c2DE34
and your access code that looks like this - 123456
Also, you need to make certain the GPS feature is on. Here is how - (you can do this before or after the app download).
GPS - Iphone - TURN ON GPS Iphone
GPS - Android - TURN ON GPS Android
If you have or have not received your site codes or access codes, go HERE