Side bar on Kindle

For my app I have encountered an annoying problem, so kindles have a side bar I guess you could call it on the side of the tablet. It has buttons like a home and back button. When you are playing a game the bar disappears and there is a little button on the side and when you tap it the side bar comes back. But for my game the bar is always there. This would be so so helpful to fix because with it gone the game could take up more of the screen and sometimes when I’m playing I accidently tap the home button.