As far as I know, the DHCP client list only shows the devices that are using DHCP to obtain IP address automatically, is the unknown device using static ip? or not connected yet?

motiuridentity wrote I have a modem. How do I know if my WAN IP is public or private? I can see it when I Google what is my IP. THe modem I have is: Motorola SURFboard SB6121 DOCSIS 3.0. I don't know...

How did you set up the Time access? Did you add the MAC address of the device? Because of the Proxy mode on the range extender, the devices which connect to the extender will have virtual MAC...

Currently the RE200 doesn't support AP mode, you can only connect to your router via wifi. :(You may need to get an Access Point, like TL-WA901ND

Do you mean the 802.11ad wireless signal range extender? As far as I know, currently there is no range extender supports 802.11ad technology.:(

Normally, after you connect the PC to the extender via cable and disconnect internet, you need to open the web browser and type in 192.168.0.254 or tplinkrepeater.net to get the configuration page....