Fernando Matias II

Anyone have any idea if I could populate all 9 hubs with tt riing trio fans? I saw a youtube video saying it's possible but on the official site, it says you can only populate 4 fans.

I currently have 25 Riing trio fans installed with 5 controllers and using v. 138. The issue I have is the software is unable to detect the last controller (#5) but all other controllers (1-4) are being detected. Does anyone here having the same issue? I have tried replacing the controller but still the same result. Any fix for this?