I actually figured how to get mine to work.Confirmed that the left control doesn't work. Big thanks to @bam1111, we meet up yesterday and he showed me how the accent light works on his Rubi (6SP MT & 8.4''). Apparently, it only works when it gets dark outside/or maybe when the auto headlight is on.
BUT we were able to confirm that my left control doesn't turn on nor control the foot/accent light in any conditions. I have a sports with the 7'' screen & 6sp MT, not sure if it has anything to do with my options, or just some defective parts from supplier. @wranglerguyman so far we have the same issue, interesting to see if others experience the same which we might find a trend.