Fibaro RGBW LED Strip Not Switching Off

Hi all,

I’m it sure if this is the right place for this, but I have just hooked up an RGBW led strip to this controller, controlling via SmartThings, all was fine when testing but now I’ve had it hooked up for a while it has started doing something strange. When switched off (in SmartThings) the led strip stays on, ever so faintly, like it’s not dropping all the voltage to the strip. Can anyone suggest what I can do? I don’t have any switched hooked up to the IN terminals.

Any ideas would be appreciated!