What is they key to download the android version
If you haven't bought the game before itch.io has disabled payouts for me, you can only download v0.03 for windows here. v0.04 for windows and android are available on my subscribestar.
If you have bought the game before, please look for a bar that says "you own this game" with a download button next to it (it's a separate button from the regular ones!)