Please verify that you have added a second language to the front-end of your website. Also, note that in the video a second translation is being added to an already existing English page. This is why a dialog appears, which asks whether the new translation should copy from the existing one. If you're creating a new page, you won't get that dialog. A video, describing the problem will be helpful to determine what causes it.
All the best,
the Telerik team
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