MX Simulator

I'm very new to the game so I've been figiting with setting try to improve my game play! I have recently ran into a problem were the game cursor turns into my normal desktop cursor when near the bottom of the screen. So when I go to click next page for tracks and etc.. it well actually pull up google chrome or whatever would be in the place were I clicked. I'm in default screen mode and I've tried others but nothing seems to work! Does anyone know what the problem is? It didn't do this when I first got it. I'm not a very tech savy person so please someone help!!!!

Never experienced this myself so these are just some guesses, try windowed mode, possibly alt+tab maybe its not hiding the game as it should, could always reinstall using the email you received when you bought the game.