The resolution(or I don't know what it is) (Star Wars: Galactic Battlegrounds)

Generally I put the settings All on default, and it so happened that mean I XS. When I Navajos in the main menu for example on the HOME button it does not light up to it you could press(not click) and click, you take the mouse to the side(to the right) to press. in the menu you can go to settings and change. The game can go into the settings but it's not clickable(not pressed). What to do??? please help