Retrieves images, but publishes them in a vertical column

The plugin does retrieve images from Instagram, but that’s where the fun ended for me. No matter which settings (I’ve tried all of them) I applied in the plugin menu (or the plugin-widget menu), the images were published in a 1 column-narrow vertical line, as it was placed in a sidebar, which it wasn’t. No slideshow, no grid, no carousel, just a vertical column filled with images and a colorbox/lightbox feature. The plugin menu is not user-friendly and with no complete explanations. The plugin site does not have live demo.