Please follow below steps to test the light:
1. Check the power adapter, is there a tiny green indicator light? Is it stable or flashing?
2. In the app switch to Manual mode. Test each channel below:
*Red: Green and Blue at 0%, slide Red from 0% to the max.
*Green: Red and Blue at 0%, slide Green from 0% to the max.
*Blue: Red and Green at 0%, slide Blue from 0% to the max.
See if there is one color cannot react normally.
3. Take a clear photo of the whole white led beads panel.