You can't touch it when you open the white version. How to solve it?

Start over and have a try. If not, please try to change another channel. It is probably a computer problem. Change the Android channel. Maybe it's the touch box. Try cleaning it up. Pay attention after opening the whiteboard: Don't pile too many files on the desktop, don't install software on the C drive, and keep the touch box clean. If the equipment is not used for a long time, the power supply should be cut off in time.