Yeelight allways blinks

after 2-3 days that the light is working perfect,suddenly it start blinking continuously .
can not connect it to the app because it shown always off and cannot remote control it.

i have an other light in different room and replaced between then and it doing the same blinks also.

please advise

You mean when you put the other bulb in the place where the blink one was, that bulb start to blink too?

no, i mean if i put the blinking one in the other room it still blinking

Did you put the bulb behind any lamp shade? Please make sure the bulb is under good heat radiating environment.

its on the ceiling without lamp shade