Only Half the course showing up on front-end as an Admin

Hi There,
It seems that when I am logged in as an Admin I can only see about half the course. I click on Unit 1 and it goes to a blank page with only the nav bar. Unit 2 works. It goes like this throughout the course.
However, when I am logged in as a Subscriber, everything shows up.

All of the plugins on the site are up to date, so I am not sure what is wrong.
Thank you for your time.