NUKI app is missing the option of "Lock immediately after closing"

I bought NUKI smart locker 3, and I’m missing in the app the option for “Lock immediately after closing”. The shorter time I can choose is 20 seconds, which is too long for me. any idea why I can’t see this option?

You need to add a Nuki door sensor for this to work too. If you have further questions please contact our support via the Nuki App (Menu > Help > Contact Customer Support) for more detailed information.

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