Please try the following steps to resolve the video problem.

- Log out from your account and restart the browser

- Update Flash Player by
clicking here (https://get.adobe.com/flashplayer/)

- Optimize your browser (clear cache and cookies, set security levels to default, etc.)

- Check your browser's plugins or add-ons that may be blocking the video from playing

- Try to use a different browser like Google Chrome or Mozilla Firefox

- Try switching to a different device, like a laptop/PC or mobile/tablet device