Pump head not working after trying LCD update kit

[ssstrong]

I have Corsair iCUE H150i Elite Capellix White and ASUS Z690 Formula, bought LCD update kit and get the red traingle issue without any solution, tried to switch back to the old pump head. When I removed the screen and put the old pump head back on, it won't light up anymore. The LEDs in the pump head don't come on, and the pump doesn't show up in the ICUE, just get Commander Core. The pump still works cause it's keeping temps down and I hear it running, but I can't access it or change the pump speed settings (just the fans). 

 

Any help please ?