Stestengat17 Normally, if you want to rent or buy a film or another payable content you need a PIN to enter.
You can make the setup of the PIN in the customer center MySwisscom:
https://www.swisscom.ch/myswisscom/dashboard/tv/5-91Q53TQ6
There you go to "Youth & purchase protection"

There you can manage the PIN and you can additionally set a cost limit.

You also can set the purchase pin directly on your TV box. There you go to the Homescreen, by pressing "Home" on the remote control. Then press the "gear icon" for the settings, then go to "account" then on "payment pin" there you set the tick on "activate" then you will be asked to set the pin.