A few points.
1. FYI, any mobo fan header can accept the speed signal sent back to it from only ONE fan. So, when you use a Hub, that Hub will send back to the host header the speed of ONE of its fans and ignore all the rest. This does NOT affect ability to control speeds. And if all the fans are the same (as yours are), you just presume they all are doing the same thing. However, this does have an impact on another item. The second function of a fan header is to monitor the speed signal for fan FAILURE (i.e., so speed signal) and put out a warning if that happens. When a Hub is involved the speeds of the "other" fans cannot be monitored, so from time to time YOU should check that all the fans still are working.
2. The Lian Li web page for these fans points out that they must be used with their Uni Hub. Then you have the choices to have that Hub's software utility control the fan speeds AND the fan LIGHTS, OR to turn over either or both of those controls to signals from MOBO headers. These choices are made using switch settings in that software. To have one mobo fan header control the speeds of the fans, you must connect the proper cable to that header. Similarly, to have a mobo 3-pin ARGB header control the LIGHTS in the fans, there is another cable connector from the Hub for that. It appears from the web page that the cable for these connections MAY be an optional purchase, rather than something included with the Hub - not clear.
3. On that website
Revolutionary fan with modular design, interlocking fan that can be linked up and operate with a fan and RGB cable. The included UNI HUB contains 4 designated UNI FAN ports. Each port can connects to a cluster of 4 UNI FANs via the cable module, allowing users to control up to 16 UNI FANs in one...
lian-li.com
I note that is says there have been changes to their software in response to user feedback about failure to work with some systems. It refers you to their Tech Support people if you are having trouble, and also offers a free download of a software "fix", with specific installation instructions shown. Check into that fully in case these items are essential for your system.