I got the note which said to stand in the square and press specific keys, played the terminal to hear the tune but there was no sound or feedback when pressing the keys in the square. I knew i had to match the tune but i didnt see how i could.
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Sorry about deleting my previous post but it was a bit redundant. I have tested the game again, and I have not found any problems on my end. As of right now I can think of two possible reasons why you are having problems, the first is that somehow you are not using the default controls. And the second is that your volume might be too low. For the first possibility, you'll need to hit F1 while running the game and reset the key bindings. The second possibility should be easy enough to fix.
EDIT: (edited the to my as to clear any confusion.)