Yeelight color bulbs are registered in yeelight app, but not connected to Google Home and Mi Home app.
It connects well to Apple Home.
Yeelight app is connected through a Singapore server.
The model name is YLDP13YL.
MI ID is 1809889217
The number of connected devices that you can see on Google Home is also incorrect.
Yeelight Streep is connected well and there is no problem with Mi Home and Google Home.
If you see bulbs in Yeelight but not in MiHome - you are most probably on the wrong server in one of the apps…