Welcome to the forums, newcomer!
Mind sharing how you've connected the AIO's fans to motherboard? A picture of the connections would help us two fold. The RGB header on your motherboard support only 5050RGB devices, my question is, did you connect to the header with the arrow towards the 12v end?
Sry, phone is dead, but, i am connected it like in manual, rgb is working, for all, pump, fans. I have a jgrb on motherboard and i am connected the cable like - JGRB = 12V RGB.
EDITED: pump connected to cpu fan connector, fans to pump connector ;D
Again EDIT: if i am connecting pump to pump connector, my pc starting to heats up, and fans start to make so loud noise.