Test It! mode cannot be launched from a published Player package like other playback modes. It must be launched from kp.html.
Note: Test It! mode playback does not support jump-in points
Within the folder where you published the content, there is a file called kp.html. When you open this file in your browser, it contains the outline structure and provides a list of all the outline items. Next to the topics are links, including one for the topic and one for Test It! mode.
To launch Test It! from kp.html: