You are running in "offline" mode. This means that the puzzle will be saved periodically, if your computer is connected to the internet. It will also try save if you close the browser, but whether this succeed or not depends on your computer and if your internet connection is stable.
As Adobe has ended support for Flash Player, our Flash-based jigsaw puzzle player is now history.
But we have built you this shiny new puzzle player!
To get help using this new puzzle player, you can view our puzzle player help page.