If a student is a member of your Google Classroom or Canvas class but not showing up on the assignment report, this indicates that the student hasn't successfully clicked on the assignment and made the initial connection to ASSISTments. Please share this video (Canvas, GC) with your student to make sure they understand how to access the assignment. Once a student does this, their name will appear (even if they have not completed the assignment in full).
If they are receiving some kind of error report, please have them send a screenshot to you, and forward that over to us at contact@assistments.org.