Hand Gestures not working on HoloLens 2

Hi folks,
I created an MR application on HoloLens 2 and was working fine. One day, the device went to sleep when the application was running and when i turned on the device again, the hand gestures (scaling, positioning and rotating) are not working at all. And also, the issue occurred on every app i made with Unity before. I did factory reset on the device and even then its not solved. I have two HoloLens with me and both of them are having this hand gestures issue now. 

I'm in a desperate situation. Please help me out with a solution for this...