Xiaomi Wifi Repeater FAQ (Frequently Asked Questions)
Q1: What should I do if I cannot access the Repeater's web management page?
A1 : Make sure your computer is connected to the extended network. A2: Make sure your computer is set to obtain an IP address automatically. A3: If the Repeater has connected to the router, you should go to your router' s DHCP client list to obtain the Repeater's current IP address. A4: Reset the Repeater.
Q3: Why the devices connected to the Repeater cannot get an IP address from the Repeater and cannot access the Internet?
A1: Maybe you enabled a wireless MAC filter, wireless access control, or access control list(ACL) on your router. To solve this problem, please log into your router and disable the MAC filter, wireless access control or ACL. A2: Maybe the Repeater has not been successfully connected to your router, please reset the Repeater and Reconfiguration. A3: Maybe the IP address of the router is occupied or the wireless device connected by the router has reached the limit, please reboot your router, then reset the Repeater and Reconfiguration.

Source: manuals.plus