(WR140) LANDROID M 20V 4.0AH ROBOTIC LAWN MOWER (1/4 ACRE)
MESSAGE: Mower locked!
Try this solution
Reconnect Landroid to the Wi-Fi network it has been originally paired with
Possible cause: With the ‘Lock Function’ enabled, if your Landroid does not receive a signal from your Wi-Fi router for 3 days, then it gets locked as a security measure.