How you can do a factory reset of the Asus RP-AC55 Dual-band extender | repeater.asus.com
The user can easily do a factory reset of the Asus RP-AC55 Dual-band extender. For this purpose, you'll be got to open any browser, after this you'll enter the www.repeater.asus.com or the IP address is 192.168.1.1, insert the username and password, both are admin, go to advanced settings after this go to factory reset option, now you'll see your repeater in a reset process. If you've got any query check https://asusrouterslogin.com/2020/05/12/what-is-the-method-to-use-access-point-mode-in-asus-rp-ac55-extender/