Open Mi Wifi App and press "+" on the right up, then chose "Connect WPS device"
Steps with Mi Wifi App
- Press + on right up
- Chose "Connect WPS device"
- Turn WPS on with device you want to connect with
- Press "Turn WPS on"
Usually I post in Japanese , however since this information seems to be useful all over the world I just wrote in English as well
Hope it helps.