I have finally been able to make the DHD buttons light up when pressed. It took some time and a few tries to solder all the small dotstar led’s to the PCB. I learned that i lack the necessary experience and tools to properly solder them using traditional solder method. I ended up buying solder paste and used a “do it yourself at home reflow technique” using a regular kitchen stove. It worked out nicely! I have made a short video of how the buttons lights up when pressed.