@malipl: Are you using Catch Kathmandu Free Theme. Did you check in Theme Instruction page at http://catchthemes.com/theme-instructions/catch-kathmandu/. 1. Is your Featured Slider and 2. Is your Homepage Featured Content
1. Featured Slider:
Catch Kathmandu Free theme only have option to use either Post Slider or Category Slider. Both of these are created to highlight your post. So, these slider takes Post Featured Images, Title and Excerpt Content.
1.1. First create post from “Posts => Add New” and then add “Featured Image” in the post. In your post editor you will see the Featured Image module in the bottom right corner under Page Attributes. Click on Choose a Featured Image. Then you can either upload the image from your computer or select the existing image from your media library and click on Set Featured Image. Click to view screenshot
1.2. Then Go to “Appearance => Theme Options => Featured Slider”. Then in Slider Options, you can select slider type as either “Post Slider” or “Category Slider”. If you select Post slider then you need to add in the post ID in “Featured Post Slider Options” and if you select Category slider then you need to select the category.
2. Homepage Featured Content
You can go to “Appearance => Theme Options => Homepage Settings => Homepage Featured Content Options”. Then add in the image url, title, content and link as per your need. Then click on Save Changes.