Question about Corsair Crystal 570X RGB

Hi all, I assembled my computer with this case yesterday. I ordered additional SP120 PRO fans from Corsair (the same ones as already installed) + the controller that came with the new fans so that I can control the fans via iCue. I have now connected all fans, from 1 - 6, to the hub and connected the other plug to a USB slot on the mainboard, but only the 3 additional fans work... For info: All fans that don't light up were already installed, + all fans that don't light up get power via the Aio, otherwise I would have had too few connections on the mainboard. -> But I assume that this will not be the problem, since this connection is only responsible for the fan speed...