AV600 is the physical poweline link speed between powerline adapters not the real speed. The ethernet port can only reach to 100Mbps, so the maximum wired speed can be 100Mbps. TP-Link does not...

you can have a look at this faq: https://www.tp-link.com/us/faq-605.html

you can set the same SSID and password as your main Wi-Fi on TP-Link extender. If your devices support seamless roaming, it will switch automatically.

internet address, that's WAN IP address of the router. try to access it with ftp://WAN IP address

What's your current percentage of each priority? The maxmium of all priorities is 100%. It seems we can't set one to the maxmium value.

Hey, you may have a look at the following link. http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitz Hope you usccess..