I think I'm going to need more clues for Chapter 5's puzzle. I get that the time of the text is involved (I had to log out to look at Chapter 1 for that). And the clue within the text tells you what to do, I'm presuming? ...Or does it?
The diagram is stumping me, though. It would help if I knew about how long the solution is supposed to be. Is it letters, numbers, or a combination of both? Is it complete words? A sentence? A question and an answer? An equation?