It looks like that’s a plugin. Currently plugins are not installable through FAB.
Since it’s ‘newly acquired’ I assume you purchased it just now through FAB? Do you see it in your Epic Games Vault? (EGS Launcher → UE Library → Vault)
Having the same issue. Some (not all) of my assets/plugins are not available to download or accessible in my Epic Launcher Vault. How can I access these assets? I am uninstalling the Epic Launcher and reinstalling to see if that somehow helps.
In Epic Launcher under Unreal and then Library: Hit the yellow Button with the circular arrows next to the “Fab Library” text to refresh Fab Library after purchasing from fab.com, might take a minute, then it worked for me
Still does not work. Happens with any template project as well. Feb Library section in Epic launcher won’t show anything but “Unreal Engine assets from your Fab Library. To see your complete Fab Library visit Fab.com”