Is it still not working for you? Are you sure you didn't change the language on your keyboard or something like that? This app was last updated several months ago, so this can't be something recently introduced.
Ooops ... I guess it's fine. I forgot that I had to disable auto rotation ~ first to make the navigation work. I was confused by the double assignment of "W" for toggle and navigation, but after ~ I was able to navigate as expected. Sorry for the confusion.
And thank you for sharing your creative and unique experiments with us!