'Export Quiz Scores' not working

Hello everyone. I've created an assessment through captivate that I then uploaded to captivate prime. After the learner completes the assessment, I am able to see their score. hte issue arises when I go to "Export Quiz Scores". I get the ususal message telling me that it may take awhile to generate the report. However, after hours, a report does not download. I've tried opening prime in different browers, clearning cookies, going incognito but nothing seems to work. Has anyone else come across a similar issue? Thank you