Yony...i know it is late, but that is your problem If you connect the water block usb 2 type to MOBO, it blows the RGB... So you probably connected to Mobo first, then after to a controller, so you basically killed it.
The problem is that TT did put a USB 2 type on all fan headers just like water block on the Floe 360, so given the fact that the pin-out of USB 2 on the MoBo is different that fan header with a USB 2 type connector, but with a different pin-out, then it blows the RGB on water block.
This is a huge flaw of the Floe 360 desiggn as I mention on my install tutorial on my youtube channel "cac2244".