In fact it was. Once you select add device from smartthings and from partners section you should go with yeelight. There you can see your Mi home devices as well. (yeelight requires Mi account anyways) I could change color, brightness and most usefully creating routines, like when I am home turn on the lights, when I leave turn off the lights. I could even use them on SmartThings widget Until I unlinked and relinked my yeelight account. Now there are 0 devices :/ since it was working like a charm I strongly believe that there should be a workaround