Snapmaker Luban connection

Snapmaker Luban won’t connect with my Snapmaker when I select it via the serial port. It recognizes it, but it just hangs. When I try to connect to my Snapmaker with CNCjs, it does work. What can I do about this?

I have Same problem when i use Luban 4.6 and i try also latest 4.9.1 version too , same problem
it reconize COM port but when i click connect nothing hapens. :frowning: