Hello,
we had some strange bug with the "W" button so, to make it in time for the Contest, we just decided to switch to ESDF for the time being!
To enter the secret room you have to solve the parchemnt riddle first (try replacing one of the symbols with the number "1"), and then write the 3 digits on the door one after the other, without any extra math.
Let me know if you need any help and thanks for playing!