Kami does not properly load when accessed through Google Classroom

I am unable to open up a document in Google Classroom that has been annotated by a student. If I open up PDF’s from other sites, they load properly.

Also, when Kami is accessed via Classroom, it asks me to upgrade, though I have the teacher version and have been using it for several weeks. When PDF’s are opened outside of Classroom, everything is upgraded appropriately.