Remove the leveling module and place it on the connection at the back of the nozzle.
Then connect the leveling module port to the upper housing "Level Switch".
¶ 2.Click "Configuration" - "Hotbed Leveling" - "Calibrate" - "Continue", please make sure the leveling module is plugged in before leveling. Make sure the leveling module is plugged in before leveling. After the first leveling is completed, the printer will reboot to the main page.When the system reboots back to the main interface, click "Configuration"-"Hotbed Leveling"-"Hotbed Grid"-"Continue". Continue". The printer is leveled for the second time, and the operation is the same as the first step.
https://www.youtube.com/watch?v=xQDugV-NFRo