I'm also having a similar issue. I have 6 of the riing quad fans and 2 x 5 port controllers (Fans 1-5 on controller 1 and fan 6 on controller 2). I was able to get both controllers to show up last night, but then after a shut down for a few hours and turning the pc pack on again. I now only see controller 2.
I also had neon maker able to see all 6 fans last night and now it can only see the 1 fan I have on controller 2.
Motherboard Gigabyte x570 gaming x
CPU: Ryzen 3900x
Ram 4 x 8 Kingston Fury X 3200Mhz
GPU: MSI Geforce RTX 2070 8GB
Keyboard: Corsair K95 Platinum XL
Mouse: Logitech M600