Hi. Thanks so much for specifically pointing out this problem. The solution to the riddle here is as follows - as I see it, you have entered room number 5. In this room, a robot dictates a set of numbers.
Please memorize these values and try to enter them on the keyboard when you are in room 4.
I'll make this riddle clearer in the next versions of the game. If you have any problems with the walkthrough, please write. Also on the page there is now a video with the game walkthrough)
Good luck with the walkthrough and thanks a lot for your interest!