post not appearing when link is clicked, but shows up on home page

My newest post at https://www.austindhill.com shows everything I want in the post. However, when you click on the post link, or type in https://austindhill.com/004-procrastination-the-crusher-of-dreams/ none of that same content is there. I’ve even tried deleting everything in the HTML and just typing in “test.” The same thing happens. “Test” shows up on my home page, but when I click to on the actual link to the post, it sends me to the PDF file page.

It’s also worth noting that I deleted the whole post, wrote a new one and just wrote “test” in the HTML. It showed up fine on the home page and the actual like. So I went back into the editor and pasted all my HTML for the real post, uploaded it, and then I had the same problem again.

What could be in my HTML that’s doing this? Any help would be greatly appreciated. This is driving me crazy