Hm you may need to play it in a browser, I'm not sure why it wouldn't work in the app...
I had gotten it to work for a while, I had uninstalled and reinstalled it because I wanted to start over. It stopped working when I did that but I'm not sure what I might have messed up on my end
Edit: I managed to fix it by replacing everything in the installed folder with the code from the source link. I also figured out how to delete my save data using the same method as the one for deleting the data in the browser