What to do if the Xiaomi Robot Vacuum H40 can't remove stubborn stains when mopping the floor?

When mopping the floor using the Xiaomi Robot Vacuum H40, some stubborn stains cannot be removed and need to be cleaned manually.
To help prevent this issue from recurring, please follow these steps:
1. Make sure the mop pad is clean and properly attached before each use. A dirty or poorly positioned mop pad can greatly decrease the vacuum’s mopping effectiveness, making it harder to remove dirt and stains;
2. Increase the cleaning frequency to avoid buildup. Regular mopping helps prevent stains from becoming deeply embedded in the floor;
3. For visible spills or dried residue, pre-treat the area with a damp cloth or mild floor cleaner before starting the robot;
4. Avoid using the robot on sticky, greasy, or chemical-heavy messes, as these often require manual cleaning.