Yeelight V2 RGB doesn't work properly with Google Home and turns out blue


I have always used my yeelight RGB v1 and V2 with Google Home. Since today, when I want to dim the lights via Google home, the yeelight V2 turns blue and won’t change to any color anymore. However the v1 works fine. the color. It’s really strange. I have updated the yeelight V2 though the yeelight app, but the error still remains. What should I do?