So I'm a Mac user, and when I downloaded the game it showed up as
UnknownError
Error: EROFS: read-only file system, open 'Chapters/Upgrade'
And when I looked into the 'Chapters' file and open the 'Upgrade' document, it's completely blank. Everything else has codes in them but there's nothing in the 'Upgrade' file. Similar bug was reported around a month ago by another mac user.
EDIT: I managed to fix it. It's something to do with adminstration access. Requires you to go into Terminal and access the game manually and have to drag the Game file out of the folder.