Why is the Xiaomi Wireless Mouse Comfort Edition abnormal in terms of scroll wheel and cursor?

If the scroll wheel and cursor of the mouse are abnormal, please refer to the following details:
1. Confirm if the computer is properly connected to the mouse;
2. Confirm if the keyboard keys are pressed down, causing the key function of the mouse to not be triggered properly;
3. Confirm if there are any foreign objects blocking or dust obstructing the lens hole at the bottom of the mouse, which affects the movement of the cursor;
4. The dirt on the surface of the mouse mat can easily affect the smoothness of cursor movement, so pay attention to keeping it clean.
If the above operations are correct and the problem still has not been solved, please contact the after-sales service for handling.