Samsung smartv————TL-PA511---------TL-PA511————D-LINK router （———: Network Cable, ----------:Power Line) In the above topology, you can't receive DLNA. Samsung smartv ))) ((( D-LINK router （ ))))...

Please tell me more detail problem phenomenon.

As I known, PLC's IP address is random, so you can't log in WPA4220 directly. You only can log in it via utility, you can go to the link following and download the utility:...

I think this problem is not about PLC, i suggest you check your router.

Maybe you can via utility to log in the TL-WPA4220KIT. You can go to the link following download the utility: http://www.tp-link.com/en/support/download/?model=TL-WPA4220&version=V1#tbl_b

My friend has tested it, he didn't find the problem. Maybe you can ask TP-LINK's technical support for help .