Yeelight color bulb offline but manageable by Mi home app

I can manage my Yeelight color bulb using Mi home app, however, when a scene tried to turn it on, the scene failed to run, saying it is offline.

So it seems it cannot be linked to your server? I am in hong kong and tried both hk and cjina sever with same result. Tried reset Yeelight and connect again , same failure.

My Mi ID 255695997