Yeelight unable to connect

Hello I bought two Mi Smart LED bulb (white)
Prior to this I already have the Color and no issues.
However when I tried to setup the two new bulbs, one was ok but the other kept blinking even after resetting many times.
I tried on different WiFi net work(phone and home) and different light location still not working.
It doesn’t detect the Bulb WiFi. Just doesn’t appear yeelight***