Alexa couln't see my Color Bulbs W3

I guess alexa’s mind confuse because of mi home and yeelight skills in same server. I tried different alexa account, different servers and different yeelight accounts. My ceiling lights and 2 light strips working without any problem. In addition yeelight scenes working either. But alexa couldn’t see my 2 color bulbs w3. So i couldn’t on / off with 2 device. Any idea?