Thank you for playing the demo man! 70 coins is a lot indeed, I'm sorry to read you got stuck too.
I'm currently rewriting the part of the state machine which causes the game to softlock when switching state. I'm going to release a new version of this alpha without a lot of these bugs. It's a work in progress ;)
No, unfortunately the saving system doesn't work (yet!). I'm currently learning how to build one properly!