Turn off the hardware NAT on the router. If still the same, i think something wrong with 3600.

Try to upgrade the firmware to the latest of 281.download link: http://www.tp-link.com/en/support/download/?model=TL-WPA281&version=V1#tbl_j

Hi mariogan,check the lights on 281. Make sure the PLC light is on because the 281 needs to communicate with the main one before you get the Internet. What is more, here is the firmware load link...

If there is no lights, then they must be something wrong with the hardware. Just go and replace them.

I think the problem is that all the units are not paired successful. So they can not talk with each other. You can install the powerline Utility from the CD software and then reset all the units in...

You can buy two TL-PA511 kit or one kit and two separate.This actually does not matter because all of them are compatible with each other. In your network, you only need one connected to the Virgin...