The robot fails to rechage.

1. There may be too many obstacles around the dock/base. Clear the obstacles or place the dock/base in an open area.
2. Your robot may be too far away from the dock. Place your robot near the dock.
3. While cleaning, ensure your robot sets out from the base/dock to make the location of the base/dock accurate in the map.
4. Make sure the base or the base station is powered on.
5. Check whether the in-app maps are askew or overlapping. If so, recreate maps.