hewwo, first of all thank you for playing <3333
regarding the issue. hmm. ive had my friends test it on both windows and mac and its working fine for them, so it could be that the bug is on your end. try manually saving in multiple files (keep in mind the autosave wont start until you manually save at least once) and see if it registers upon quitting and restarting. if it doesnt, maybe reinstall the game bcz something may have gone wrong during the process??
technical issues arent my forte im afraid *~*