AiSuite and FanXpert don't seem to integrate with anything (which seems crazy to me); they only show you the motherboard fan headers there (only on the board itself, the fan expansion card supplied with some motherboards also doesn't show up there). The Ryujin II control box / fan hub is controlled in Armoury Crate, giving you basically the same general functionality as FanXpert but for the Ryujin's headers.
Edit: the fan control on the AC dashboard also doesn't control the Ryujin. You have to open the specific device page for it on the AC devices list.
What you mean by this " You have to open the specific device page for it on the AC devices list." exactly ? I have problem where i can't see my Asus Rog ruyjin II AIO Fan controller.