If it's the one I'm thinking of, this device includes a read-only ~100KiB USB mass storage device filled with .lnk files to remind you to register the device to get your bundled digital goods (a bunch of DAW plugins).
You might want to try connecting the interface with Windows and install the focusrite driver. This will set the device to a "pro audio" mode, unlock the higher sample rates, and permanently make it stop behaving as a mass storage device. Not sure if this fixes Haiku OS USB audio compatibility, but it's a good bet and helps avoid the annoying mass storage device volume.
If you don't have a Windows machine to do this on, you can do it in a libvirt or qemu virtual machine on Linux using USB host device passthrough. Once you do it, it doesn't have to be done again, I'm guessing they implemented this with an eFuse.