Featured image are generally displayed on Blog/Archive/Category and Single post page. If there is missing of image on a single page, archive page or category page, there may be missing of featured image on a post. So, please add featured image on a post so that your category page, archive page and single page will be fine. Please follow the below steps to set the featured image on the posts.
- Go to Admin Panel
- Go to Posts > Add New
- Give the Title of the Post
- Write the Content of the post
- Scroll down and see on the lower right corner (Set featured image)
- Click on “Set featured image” and select the image from the library or upload from the local drive
- Click on “Publish” button to publish the article.
If you have any confusion please post your question below on the comment box.