Hi! The game has not been optimized for mobile devices yet, which is why you're seeing the black textbox + black text. I apologize for the inconvenience.
You can try different versions of the joiplay emulator here: https://www.patreon.com/joiplay
Or try Winlator, but you need over 2 gigabyte of storage space: https://github.com/brunodev85/winlator/releases