Thanks! I'll put keyboard stuff at the top of the list. I was hoping that it would have been fixed in the engine by now, but I can probably work around it or add an option.
I was looking back into this and remembering that this is only an issue for web builds.
In the meantime, qwertz should work fine in the native build for your platform. If you'd rather not run mysterious binaries from itch, the game is completely open source and easy to build.