@Solla-topee I tried from another PC, ie from my Laptop, but PowerLine Utility can't see my PA8030P. Then I tried to unplug the PA8030P from the router and connect it directly with the network cable...

@Solla-topee I connected the TP-LINK TL-PA8030P to my router with the ethernet cable. Then I connected a device to the other lan port of the TP-LINK TL-PA8030P. In the web interface of my asus router...

My two TP-LINK TL-PA8030P work well and the lights are turned on properly. I have a Asus router. In the tpPLC_Utility_Windows V2.3.4137.4 Build 20210430 however the message "no device connected"...