Can not connect Xiaomi Mi Smart LED Bulb Essential to Yeelight app

Good morning everyone,

I just bought a Xiaomi Mi Smart LED Bulb Essential in France, and I live in France.
The thing is that I can connect the bulb to the Mi Home app, and use it, but honestly this app is bad.
So I tried to connect the bulb to yeelight, but it doesn’t work.
First, I don’t know wich server use, wich bulb reference select. I tried some couple of server and bulb reference, but the app doesn’t detect the bulb.
I don’t know what informations you want to have to help me.

Sorry for my bad English.