Questions about Venta LW 25 Comfort Plus

I would need the use of this device especially for the bedroom. We have rather dry air due to the room ventilation. To prevent it from running unnecessarily all day, a timer function would be great - but it doesn't seem to have that... My idea would be to solve the problem with a timer that switches on from, for example, 17-23 hrs. My question: Does the unit switch itself on as soon as it is connected to the power supply or do I always have to press the "Power" button first for it to run?

Does this product have 3D disk stack? On the photos the disck looks without multiple holes like the 3D disk stack has on the Venta site. Thank you

How often do the discs or disks need to be changed/replaced?

should the 3d disk rotate? for me, the disk just rocks back and forth.

Does the Venta LW 25 Comfort Plus now have the new 3D plates?

Is this already the new series with the new VentWave™ 3D plate stack? These are supposed to humidify much more efficiently.