Xiaomi Yeelight Crystal Pendant Lamp color issue

Hi, I have Crystal Pendant Lamp connected to Yeelight App. There is one big issue: green color in my lamp just doesn’t work, only red and blue color (and colors between them). But there is interesting fact that green color worked first 2 days after installation. I think that there is maybe firmware issue. How can I solve it? Thanks.
My MI ID is: 4177885123