Single Post is blank

I love this theme…exactly what I’m looking for. The problem I’m having is with my single posts. I recently switched over from another theme, and now whenever any of the permalinks to my posts from my front page are clicked, it goes straight to a blank page. I have tried resetting all my permalinks, and disabling all my plugins. I also noticed that when trying to compose a new post, I am no longer given the option to view or modify the permalink (beneath the post title). I have since switched to another theme to keep the site functional, but I’d really love to get this working on Adventure. Anyone else have any experience with this issue?

The site is: https://www.iparkedlikeanasshole.com (currently running the “admired theme” as a backup)