Cannot connect

So, I buy Mi Smart LED Bulb Essential (white and Colour)
It’s work well few days, but today , it’s disconnected from mi home. I cannot connect to lamp, and after I turn on this. It’s blink red/green/blue , and after this blink it’s work like simple bulb with white color and I cannot connect to bulb :((

What can I do to fix this? Plz answer

Hey, seems you did a factory reset on your bulb. Have you tried clearing the cache of the Mi Home App of yours?