I have seen this situation in the past. The solution was to not use the USB but rather use the MIDI out (which this keyboard appears to have) from the Keyboard to the MIDI in of your audio device (if your audio device has one). My MOTU does have midi in so I can take an older midi keyboard which is no longer supported via USB (no drivers) and get it fully working by connecting to my MOTU to send the midi to the computer by USB. (See page EN 61 of the manual - you have to use the MIDI cable to send midi to computer).

BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6