I always get notification when my professor has added a new assignment to do, but when I open the app, the assignment isn't there. It stopped working about a week ago. It says he hasn't posted anything new since then but he has because 1. It worked for everyone else in the class and 2. I got a notification about it. What is going on and what do I need to do to get the documents to show up? I've refreshed, reopened, and looked everywhere. I red this to work to do homework assignments!