Why is Lenovo Motion Control not turning on?

I recently bought a Lenovo Yoga 3 14. It didn't come preloaded with windows 10 at the time, so I updated it as soon as the pc turned on. When the update process was complete, I then installed Microsoft Office Home and Student 2013, and Kasperky internet Security. When I booted up Powerpoint, the Harmony application told me about Lenovo motion control. I activated and, for a while, it worked with no problems. But it suddenly stopped working. As for the rest of the applications, like Touch Control, they still work, but it seems that the motion control is offline, even when I turn it off and on again. What should I do?

Note: I would prefer to keep harmony online, so uninstallation is out of the picture…

Added (1). To Aerialnine: As I mentioned, it was working perfectly fine with the webcam, but it just suddenly stopped

Do you have your web cam turned on?