Xarm6 controller connection

Hi, I’m currently having trouble connecting to the robot arm. The connection suddenly stopped working, and I’ve also tried resetting the IP, but I’m still unable to ping the controller. I’ve attached a photo of the controller. Only the left-side LED of the LAN port is blinking and the right-side LED is off. Could this indicate a connection issue? If not, could it possibly be a problem with the controller itself?
Any insights would be appreciated.

Hi CLB,

Please send the SN of the controller to support@ufactory.cc.
Can you connect to this controller before? Can you hear 3 beeps after powering on the controller?

What is the IP of your PC? Please enter ‘ipconfig’ in the terminal and take a screenshot of the result with us, thanks.

Best regards,
Minna