Please test below:
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, Blue and White at 0%, slide Red from 0% to the max.
*Green: Red, Blue and White at 0%, slide Green from 0% to the max.
*Blue: Red, Green and White at 0%, slide Blue from 0% to the max.
*White: Red, Green and Blue at 0%, slide White from 0% to the max.
Only Red cannot work normally?
3. In the app switch to Manual mode, press the “All” button, take a clear photo of the whole led beads panel.
4. Unplug the light, take a clear photo of the whole led beads panel.