I went over to the Coursepress Pro site, and they have a troublshooting flowchart I followed. One of the steps is to change themes to a default wordpress theme. Once I did that, the warning messages disappeared. So I think there is some sort of issue with Coursepress pro and generatepress not playing nicely with each other.
I asked them for guidance, and I just want to ask here as well- is there somewhere specific I should look to solve this?
Thanks so much, I appreciate it.