How can I report a content error? iKnow! Support Updated July 31, 2019 09:10 Follow If you find an error in our Official Courses, please send us a report from the inquiry form with the following information: ・Course URL・Item・Brief Description Related articles How do I clear my browser's cache? Why are the pages on the site not displayed properly? How do I remove a course from 'Now Studying'? Can I share my custom courses with others? Comments 0 comments Article is closed for comments.