RGBW LED strip with Magic Home Controller

Hi community,

I recently bought an RGBW led strip with a Magic Home controller.
I have some experience with these controllers but so far just the RGB strips, with no white LEDs.
I’m having trouble switching between the white LEDs and color LEDs.

I read through these:

And it seems that all configurations are right.
When I switch to white from the Magic Home app, I can control its brightness through the White2 channel, Power channel and Color channel work as expected.

But the problem is once I pick a color and the color LEDs turned on, I can’t seem to switch back to the white LEDs without using the Magic Home app.

Has anyone encountered this problem?
Thanks…