Looking into this situation, it sounds like the setting is checked to load students filtered by student groups in Speedgrader. When this happens Speedgrader loads the students in groups. We need to select the group before clicking to Load Speedgrader.
If this does not show the students, we need to make sure they are assigned to the correct groups, and assigned to the assignment as well.
What could potentially happen in this case, is that the students are unassigned from the assignment. If you are trying to load students that are not assigned to the assignment, that will cause that message to show
If you are seeing this, try editing your assignment, and making sure the assignment is set to be assigned to Everyone in the Assign To box. Once you make sure its assigned to Everyone, try clicking back to Speedgrader.
Hope this helps!
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