How long have you used this product? I think maybe it's hardware issue. Because the LED status is abnormal.

Don't know why this happened. Maybe it's a compatibility issue between the modem and your network adapter.

You can try to pair them in the same room first. Then put it where you want. But please notice,the PLC should in the same circuit.

It can only work in the same circuit. If it's in different ammeter,the signal will loss a lot and may not work.

Hi,when the device connect to the router,no matter connect to 2.G or 5G,they are in the same subnet. So they should be able to see/use each other. If you have the device,you can set it up and approve...

Maybe it's caused by the subnet settings. You can try to set the subnet to 255.255.255.0 and check if it works.