First, let's see if this menu on the electronic whiteboard supports drag-and-drop operation.

Second, you mentioned dragging with your fingers, so the electronic whiteboard you use should be one of infrared sensing, pressure sensing and optical sensing. You can rule out whether it is caused by hardware problems first, and you can check whether other functions are normal.

Thirdly, positioning and calibration operations can be performed again;

Fourth, the general system firewall and anti-virus software will prevent some functions of the electronic whiteboard, so you can turn off the anti-virus software appropriately and let the firewall go.

In a word, the situation you describe should locate the problem from several aspects.

We are an interactive whiteboard manufacturer, and you can communicate with us if you have any questions!