Hi! Sorry to hear that, yes this is an old game haha.
I just rebuilt packages w/ Godot 3.4.4.
I also added an HTML5 build so maybe try playing it in the browser.
Tried playing in browser and d key doesn’t move character to the right.
OK I uploaded html5, mac, linux, and windows versions using Godot 3.5.3, I also changed some of the key bindings.