Is the section hidden for some? Try this…(from this post)
Go to the CSD page , choosing the student’s section, and check to see if the section is hidden or visible? If it is visible, to ahead and choose “hidden” in the Unit 6 area. This will hide the unit from the entire class. Refresh the page, then click “visible” in the Unit 6 area. This should make the unit visible for all students, even the student that couldn’t see it before.
Michelle