just a tip for everyone moaning abou the save functionality. you need to save around every 10 to 15 minutes . after this i recommend that once you've saved your progress just load it back up again to make sure it work after i strongly advise either quitting the game or refreshing the page i think refreshing the page is possibly best then after start your game again and your progress should have saved. this works for me and ive had very few issue with this. one last point try donating as well