If you are having issues with your galleries or slide set not appearing when viewing your page, it could be down to the image size that you are using.
If you are uploading images directly from your camera, some images can be over 4000px wide which is just too much for any normal web server to handle.
For the fullscreen slider, we recommend no more than 1600px wide for each image. Most users computers cannot handle much more than this.
For standard images that won’t open in fullscreen, we recommend 1000px or under.
By following these guidelines, your gallery should appear and your page load speed should be increased over using very large images.