Hi Shuai, I'm very that Motion Live only supports Leap Motion v3 and v4.Which device did you buy,Leap Motion or Ultraleap?If Leap Motion,please download Leap Motion v4 form below link: https://developer.leapmotion.com/releases/?category=orion Please Launch Leap Motion Controller ,then please check "Allow Web Apps" in Leap Motion Control Panel,then you can connect iClone and Leap Motion. Molly Reallusion