Problem with an RGB Led

Hello, my name is Mihai and I have the following problem.
I have an RGB led that only works one color at a time. A 4chPro can be used to light color 1 for a while and then switch to color 2 and then color 3 from the moment it is powered. If you can help me with an idea that would be great. Thank you.

Hi there, may I know the model of the RGB light you’ve bought? Please kindly note that only RGBIC LED strip lights can display multiple colors at a time while as for RGB strip light, only one color at a time.