Yeelight XianYu C2001 C450, 50W, flashing.

Recently, I have bought 4 pieces of smart light Yeelight XianYu C2001 C450, 50W, AC220V on Banggood (PL warehouse). After some time one of those lights started to blink constantly. I have tried to restart the light, but it is not working. Could you please help me? I’m sending you a video as attachment.

The stroboscopic words should be the drive is broken, contact the operator to change a drive or change a light bar