When I click on the button for my instructor's feedback on a graded assignment I get a page that says UNICHECK in the upper left with a message in the middle of the page that says student limit exceeded???
"Unicheck" is a plagiarism detector (see Plagiarism Checker and Originality Detector | Unicheck ) that your school appears to be using. The "student limit exceeded" probably means that your school has licensed the Unicheck tool for a certain number of students, but there are more students than are allowed trying to use the tool.
You will want to talk to the Help Desk or Canvas Support at your school about the problem, so they can address the licensing issue.
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