Buy an Ethernet cable to connect your TP-link router with the repeater. Turn off the router and the modem and then turn it on again. Connect your computer to the range extender with an Ethernet cable and try login with www.tplinkrepeater.net now to get the IP address of the clients to go to the DHCP client list and get the current IP address of your range extender. Toll-Free No.:- 1(800)836-3164