Your slideshow images rotate automatically when I view your site. But I do notice that you have the “pause on hover only” feature enabled from your Slider’s settings. Is it possible you’re accidentally hovering your mouse over the slider when the page loads and not realizing it?
You can tell if the slider is currently auto-advancing or not based on the play/pause button.
Right now, the way you have it setup, when the user hovers over the slider, the slider wiil pause and thus you will see the “play” icon. The only way to get the slider to play again is for the user to click the “play” icon. — You can change how this works from the Settings of your slider.