Problem Description:The hole position of the digital display and the riser are not the same position.
Reason Analysis:
The hole of the iron sheet at the lower end of the digital display does not correspond to the hole of the screw at the upper end of the riser
Solution:
Use a vise or a wrench to move the iron sheet at the lower end of the digital display so that the hole of the iron sheet corresponds to the screw hole at the upper end of the riser.