Yeelight XianYu C2001 C550 flashing, blinking

I need help wiht problem.
The lamp starts flashing when turned on - see viedeo:
It can not be paired with the application. If this succeeds ( I tried restart Lamp maybe 100 times to make it work) the lamp is displayed as offline in the application when turned off and on again.

Since the beginning it was perfect until it started blinking ( about a month ago ). I tried everything - restart ( 5 times on / of ), - reconnect to yeelight app and upgrade the firmware ( FW has already been the newest ), - keep blinking for couple of hours… I tried to search for solution on the internet, but nothing has work.

It looks like there’s something wrong with the power supply,contact the after-sales department for replacement