@gt_thegame 

Hi,

If the main router has assigned a new IP address via DHCP to your Archer C7, then you should find that IP address in the main router's DHCP client list.

In case you have already connected other client devices to the Archer C7, then it's actually possible the Archer C7's IP address is being shown as assigned to another device name.

Anyway, when using things like WDS or AP mode or Repeater mode it's always a good idea to assign a LAN IP address manually and not rely on DHCP or Smart-IP. That way you will know what the IP address is.