Start Cupra mode

Hello, I’ve heard that after the ignition is switched on, you can switch to Cupra mode right before the start. The flaps should be open at the start of the car. But I noticed that in the speedometer display after the start, the gearbox is displayed on “D”, although the Cupra mode is set, should actually be displayed on “S”. I have to switch to Cupra mode again in the display afterwards.