Mi LED Smart Bulb (in Yeelight app) in SmartThings

Hi guys,
I was trying to find out, what could be the problem, but nothing.
I have my bulbs added into Yeelight app, linked the Yeelight (Xiaomi) acount to SmartThings, but no bulbs were added (I have three of them, all the same).
I have also the SmartThings hub from Aeotec, nothing helped.
I tried to do factory settings of the bulbs (by turning on/off five times the power, it successfully did factory reset). I re-added the bulbs into Yeelight app, re-link it to SmartThings. Nothing helped.
I bought it in EU, hub is also from EU, I am living in EU (maybe it could be somehow related, so I added that info there).

Does anyone know, what could be the issue? Do I need to add somehow device handler or something? I am new to this. I had before only Google Home hub and the bulbs, now I would like to get everything into the SmartThings together with new smart home utilities.