Gave it a go, but I really have no idea what the combination is and why, even after seeing the hint and 2 solution hints. The only thing is that with KS plus, all but the green one go to void screen, so that is obviously the first choice, and the counter above seems to count all attempts +1, but even if I follow the order of the solution, at the last screen, I get a you fail.
Found the hints now... Seems those colored circles on the main screen (not puzzle screen) in combination with the hint about the lowest hand holds the card thingy has to be used to figure out what color one needs to choose. Could be something like: anti-clock wise, bright color is # to the right, Dark color is # to the left n times, gray, do same number again or something like that...