You probably need to change the device handler it is using. You do that via the IDE, and then going into the device and editing the Type field. You can try “RGBW Light” from the drop down menu. If that doesn’t work, then you may need a custom handler written.
@TheSmartestHouse has one that may work for you as well:
There are also several others that may or may not work with your light strips, and those can be zwave or zigbee. There are many discussions in the community regarding RGB/W controllers, which can be a bit overwhelming to read through all the opinions.
Try updating your device to a different handler first. It may work, and/or another custom handler may work that’s already available in here somewhere.