The Wi-Fi password on back of WPA4220 is composed of 8 digits. Is it the one you tried to connect Wi-Fi? If it doesn't work, maybe you changed its password or you've done Wi-Fi clone? Does the router...

As soon as I connect another ethernet cable to the powerline from the router... Why do you connect the router and PA8030P by two ethernet cables? :confused: The right topology should be: Router(one...

WR710N supports 2.4GHz only. What kinds of device are you looking for?

C9 is configured as an access point and WAN port is not connected, right? Channels on airport extreme and C9 are auto? Can you fix different channel for those near to each other? Besides, try to...

Why does my cloud camera show offline on tpCamera APP or tpCloud website? http://www.tp-link.com/en/faq-911.html

According to the error message, you should contact your ISP. And it seems that firewall settings related to GRE protocol are not configured properly...