Web version. I'm using Firefox. I tried it again and it still didn't save.
Bug fixed! Thank you for feedback my friend, now is just click the leave button in the pause menu for save your progress!
Can you make it save after every level? I don't want to lose my progress because I forgot to hit a button.
Thanks for the suggestion! I've just updated the game, and it now automatically saves your progress after every level. If you have any other ideas, I'm all ears—your feedback really helps with the development :)