When I bought my Logitech MX keys, it was cheaper than the MX keys Plus (and it made sens). Thus I would highly recommand you to buy the Plus version, as it's now cheaper with more features (the rest)....
It's amazing that Digitec hasn't answered this question for 20 days. I guess the MX Keys Plus is for contrarians and the MX Keys for the, well. At least here I can take it with humour.
I have exactly the same setup since today - Win 10 office and Android in the office. But I think you need to add the language German CH in the smartphone. I'm not sure, but give it a try
It has a USB C port for charging the battery. I tried it briefly: Connect cable to PC, remove USB receiver from PC, switch keyboard off and on -> keyboard was not recognised and did not work. I think it only works wirelessly.
Were there any changes between 2022 and 2023?
I bought mine in March 2023 and it is compatible (like many logitech products bought in the last 3 years).
Install the Logi+ Options App ( https://www.logitech.com/de-ch/software/options.html ).
Inside, you can assign other functions to all the additional buttons. You need a so-called Smart Action to start another programme. So select your keyboard in the software, select the camera button and then make a Smart Action to start the SnagIt programme.
Note: Smart Actions require a free Logitech login.
I do not have this problem, but I have adapted some default settings to my needs with the Logi Options+ utility (downloaded from Logitc). Maybe that helps here too?
This keyboard can be connected to 3 different devices via Bluetooth. The switch works via the buttons "1", "2" or "3". I have been using it every day for years and it works flawlessly.
This version (Logitech part number 920-009407) only works with Bluetooth or the Unifying receiver (also included). The "MX Keys for Business" version (with CH layout, Logitech part number 920-010246), on the other hand, only works with Bluetooth or the Bolt receiver. In any case, it is helpful to check the Logitech part number under "Technical Data":
https://www.logitech.com/de-ch/products/keyboards/mx-keys-wireless-keyboard.html
https://www.logitech.com/de-ch/products/keyboards/mx-keys-for-business.html