Trying to connect the kit with an ethernet cable to my desktop, after paiting the units and connecting them according to the instructions provided, I did connect the AV600 extender to my desktop with an ethernet cable.

Initially the connection was working but after few minutes the device was loosing connection, both wireless and ethernet,  I did doenload the utility for windows 11 and even there initially was seeing the devices but after few minutes didn't see them anymore.

I did try to remove the power saving as well from the devices settings.