Please use the report button to explain why the content was non-compliant with the given instructions and criteria, then copy and paste your comment in the text box to submit your review. If the peer-assessment activity comes with a set of rubric questions, you should answer all of them (by selecting the lowest score) in order to proceed.
If the work is not compliant with the instructions, the participant you reported may be denied the course certificate, to ensure the same standards are maintained for everyone in the course.