If the mop pad of the Xiaomi Robot Vacuum X20 Pro falls off, please follow these steps to address the issue:
1. Check both the mop pad and the holder for any signs of damage or wear. Ensure that the mop pad is clean and free of debris that prevents it from attaching properly;
2. Align the mop pad with the designated attachment area on the robot vacuum. Ensure it is positioned correctly and press it firmly into place until it clicks or secures;
3. If the mop pad cannot be attached well or is uneven after multiple uses, please replace it with a new mop pad or mop pad holder in time.