This is the latest firmware (Archer VR600v(DE)_V2_180509) for Germany (https://www.tp-link.com/de/download/Archer-VR600v.html#Firmware).
While all password boxes give you the superb option to either hide or show the passwords, the Wifi password boxes (2.4 and 5 GHz) are missing this option. Unfortunately, the only way to enable only one of them is by calling up that dialog and then everybody standing behind you will see the password(s)!
I'd further suggest adding an option for the Wifi hardware pushbutton. For instance, you could have a simple drop-down box with three options:
* turn on both (2.4 and 5 GHz) when pressing button
* only turn on 2.4 GHz
* only turn on 5 GHz
(where switching off would always turn them all off)