Hi Nurul Farhana Binti Zolkifli thanks for reaching out. I checked the course pages and I am able to see all of the videos in them. Are you able to try a different browser perhaps like Google Chrome or Firefox? If you are already using Chrome, kindly try accessing the course in  a private window to see if it would allow you to watch the videos.

If the issue persists, please email us at support@openlearning.com and include what browser you are using, and if you are on a computer or mobile device.

Thank you for your patience.