Hm, first you could check whether there's enough storage left on your phone. Keep in mind that you may not be able to utilize 100% of it since your system might need some free storage on standby. Then maybe try to use a different webbrowser to download, then restart your phone, then just wait 24 hours.
The file is hosted on Itch directly, so if you can download any other large games hosted directly on this website, this mod should work as well.