Have you tried plugging the keyboard defaults into a profiler, like JoyToKey?
Viewing post in Nova's Adventure (Sage 2024 Demo) comments
If you have a PC-compatible controller, you could download JoyToKey, and open that program. Then, start pressing buttons on the controller, and you'll see slots of the JoyToKey window turn yellow. If you type a keyboard key into that slot, the controller will then be able to type that key.
Here's a download link:
https://www.mediafire.com/file/xlfhi2o02z2enxg/JoyToKey.zip/file