Check your internet connection and try to watch the video in another browser.
If the issue still persists open Developer tools in Chrome and check for errors in Console and Network tab. If you have any errors capture them and send a support ticket or contact our live chat support so we can debug the issue.
To open developer tools in Chrome right-click an element on the page and select Inspect. Or press Command+Option+C (Mac) or Control+Shift+C (Windows, Linux, Chrome OS).