Hello team, we are two adults who have bought the half fare card and got the complimentary Swiss family card for children( 10 year old kid). While booking on sbb app I select half fare for each adult and get the half fare price. But when I select the child it still charges me a price, when I think kids under 12 are free. Can you please let me know how do I book train tickets for my kid? What should I select in the pass options.