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I'm playing the Steam version of the game. I collected the 3 scraps of paper however when I use the numbers from the 3 papers on the combination lock it just says "No, it's not that..." and the door remains locked. Any other combination has a different response with it saying "I was sure it was that... Unless?" Is there something I'm missing? I can't find anything else to interact with. (Edit: I got it the middle note is supposed to be upside down. However it looks like the messages for the codes are mixed.)

After getting to that room and talking to him I completely lose the ability to open the menu.