I've solved everything except for any of the four 3-digit combination panels. Can someone give me a a hint as to where the combinations can be found?

I am not anymore able to find any of your games. Did you remove your games, or is there any other issue with Steam?

The game always starts in full screen and full resolution, despite selecting a smaller window in my last session. In addition, I always have to select the language. And I prefer to select English, despite being German, because the German translation is nonsense already in the language selection screen....

Can you please add this as an option