rp-ac68u repeater doa asus

During the setup, the Led lights continued to blink and I cannot access it using Asus's device discovery using wifi nor LAN. Asus manual suggested using http://repeater.asus.com to access but it does not work. What is the default IP? I have used 192.168.0.2 and 192.168.1.2 and it does not work...