I just finished reading part 4. I'm super bad at these clue things but they're fun so I want to try to help out. Here's the little bit I've found.
There's a hyperlink on the word "see" (second paragraph) that leads to: https://www.gasstationjack.com/bury
A photo of a wooden box, above the picture is: "ominous." The second 'o' is a hyperlink to the same page, although opening the image itself up in a new tap brings up: https://static.wixstatic.com/media/fc1a9a_9a7385fc141244c28532d30eec2d65ad~mv2.jpg/v1/fill/w_590,h_310,al_c,q_80,usm_0.66_1.00_0.01/coffin-interior.webp
Could be simple foreshadowing, or perhaps its a clue towards something else?