Check if the foot pad fixing screws are broken. If it is confirmed that the cause are broken screws, contact customer service (cs@creality.com) for replacement. [3206010025: Hexagon socket head screw M4×20 + 3205090061: Cylindrical foot pad + 3201012059: Foot pad bracket]
If the screw is not fixed, it can be reinforced and fixed with hex socket screws.