My new Mi LED Desk Lamp has been successfully setup in both the Mi Home and Yeelight apps and is perfectly controllable. However when the account is connected to Google Home, operation isn’t recognised.
If the Mi Home account is connected to Google Home, the Mi LED Desk Lamp is visible but any attempt to control it via the Google Home app or assistant fails.
If the Yeelight account is connected to Google Home, the Mi LED Desk Lamp is not visible at all.
I have a Yeelight LED Strip which is connected and works with both accounts via Google Home.
With the latest policy of Mijia, they don’t allow 3-rd partner control devices with brand Mijia. So you can’t see these devices from google home/Alexa/IFTTT. If you want to control these devices that disappear from google home/Alexa/IFTTT, please try with mihome skill.