Place the robot 1 meter directly in front of the Charging Dock, and start the Recharging Mode to see if it can return to the Charging Dock. If the robot can return to the Charging Dock properly, then follow the steps below to troubleshoot the problem:1) Check whether the protective film on the Charging Dock has been thoroughly removed. 2) Check whether the robot starts from the Charging Dock for cleaning. 3) Check where the Charging Dock is placed: a) The Charging Dock should be put in an open place, not a small, narrow one; b) It should be placed against the wall, and make sure there are no obstacles within 0.5 meters on its left and right side, and 1.5 meters in front; c) It should be kept away from sources of interference such as a TV; d) No reflective objects, such as mirrors and windows, should be placed in front of it. 4) Relocate the Charging Dock, then try again.