Loop & Sample Library missing in Nuendo 12

I’ve installed a bunch of libraries and they all show up just fine in Steinberg Library Manager. But some of them are missing in the “Media” panel in Nuendo.

Don’t know if you guys can see it clearly but libraries like Game Sound-FX is present in Library Manager but not in the DAW.

It worked just fine until the problem occured within the past few month. And when I tried to update something with Steinberg Download Assistant, it stucks at startup and reoprts “A connection to the download server could not be established. Check your internet connection and try again.”
Have tried disabling firewall.

Windows 10 22H2, Ryzen 7 5800X