Did you see this FAQ on TP link website? http://www.tp-link.com/en/faq-468.html

Did it fall from the desk? It seems the lens is broken into pieces.

:rolleyes: very happy to hear that

What's the connection type with your internet service provider? if the connection type in PPPOE, or dynamic IP, you may just reset the D7 to factory default, don't set up anything on D7, and go to...

The issue should be related to the hardware connection. You's better find another wired device to test also. And try another Ethernet cable, and make sure the cable is plugged in firmly on both...

The picture you put is not visible. Is there any other words apart from Error code 4716? Can you show a screenshot of the settings on Parental control?