There clould be interference inside the power wiring that affects the speed. Is there any new high-power electrical applicance installed in your house? Sometimes, the powerline condition will auto...

Did you get the problem resolved? Which version of the firmware works fine with the IPTV/IGMP snooping?

How about the LED lights on the 4010 units? make sure all the 3 lights are lit when the PC/PS4 is connetced. If the 2nd light is not on, that means it lose the connection with the main powerline...

The default wireless password (8-digit password) for the powerline extender is printed on the Wi-Fi info card as well as the label of the extender. It's quite small, check it carefully.

With the latest tool - tpPLC utility, you can turn off the power save mode. That may help.

You can install either tpPLC or PowerlineScan utility on the PC, connect the extender to the PC via cable, then login to the web Ui of the extender to manaully change the SSID and password to be the...