Etc.The mouse movement becomes unstable after the sensor is connected.

1) Cover the sensor with your hand and see if the mouse is workng.
2) Cover or turn off any bright lights near the sensor. Make sure that there is no object reflecting light such as a glass table.
3) If the sensor is facing a window or a light, relocate the sensor.
4) Go to GoTouch Windows>Settings>Program Setting>Sensitivity Setting, and adjust the sensitivity level.