There are some times of year - most often in the summer after one school year has ended and before new classes have begun - when the Classes "zoom" on your home page may be empty, or may not show the classes you are looking for by default.
When this happens you can modify the view to show completed/upcoming classes. Here's how:
View Completed/Upcoming Classes
On the Edsby Home page scroll down to and select the Classes zoom.
When the Classes zoom opens select the dropdown menu above on the far right-hand side of the Classes screen and scroll down to "Show completed/upcoming class". When the classes appear you can search for and open past classes.