Thanks.
1. Your slider doesn’t seem to have images in it. Please make sure that you have created at least 2 slides.
2. Update the plugin if its not the latest yet.
3. About the shortcode youre using.
– Theres no “id” attribute
– Use css value for width and height (e.g. auto, 200px, 100%)
4. Start with [simple_slides] only. The slider is responsive now.