Numpad isn't displayed in keyboard shortcuts

There's a chance you probably found the solution, but I'm going to post it here in case anyone passes by.... The solution is actually so maddeningly simple... Just scale/stretch horizontally the Keyboard Shortcut window and the numpad part will appear.
Also, even if you can't make the numpad appear no matter what, you can still assign shortcuts to it on the lower left panel and check out which keys are assigned to it by holding the specific numpad key you want to re-assign and looking at the lower right panel.