Hello Hazel1
By default, the app uses full fare unless you have entered a travel card in the traveller settings. Thus, if you have not set the Half Fare Card setting yet, the app will calculate the tickets using full fare.
How to change the settings, you can see in my screenshot below. You must enter a start/end point, and then select a connection. Then you will see the pen to modify your traveller data.
Kind regards,
Roland

