Yeelight turns on by itself

Hello, I recently just bought a yeelight JIAOYUE 650.
It turns on by itself in the middle of the night, e.g. yesterday at 23:15.
I checked the app and my account and there is no schedule active. I also tried resetting the bulb but I got the same result.

Someone know what i can do ?

Thanks in advance !

Was there any power outage?