I m happy you played this much , I m aware of these problems and currently working on the game , it needs a lot balancing and testing , this is just a demo and proof of concept.
thank you for your feedback , I m planning to add lock feature to the shop , I also want to have some active thing you can do with your mouse so it help go through first stations , the game is in early development , and it needs a lot more content and a lot of balancing .