thanks for playing!
Your jumping issue confuses me a bit though, you should definitely be able to jump the instant you hit the ground.(some of the later challenge stages in the demo certainly couldn’t be done without being able to do so) I've even got a bit of a buffer (you’ll jump the moment you hit the ground if you press jump within a short period before hitting the ground) to make sure this is easy to do, maybe i need to be more generous with it?