The red color can't work on one of my bedside lamps

YEELIGHT Bedside Lamp
#1

I have two bedside lamp . But one of them can’t work well. When I choose the red color , the lamp can’t show anything , when I choose the green , the lamp show the warm yellow color, when I choose the bule, the lamp can show out the bule correctly. I had try to reset the lamp ,but it doesn’t have any help. , How can I solve this question ?

#2

http://gjalt.lt3.net/ali/VID_20180402_152655.mp4 I had made a video about the problem.

#4

There is sth. wrong with your light. Please contact the reseller.