OMG, I feel SO stupid now. I did not check if I were in the correct forum section :-)
Thank you Yigit!
Sorry guys, I am totally confused. Ismael advised: “Did you try to add the image using the Featured media > Add Image to slideshow button?”
I do not see Featured media. I see featured image. If I insert an image there, I do not get an option to add it to any slide show. So I have no clue which button is meant.
If I add a slideshow to the post itself, I do not see a tickbox or any other method of making the image featured. Adding a slideshow as you suggest here, does not show the image on the page where I have the blog grid with all the articles in overview.
I am very new to WordPress, I hope you forgive me for any “blonde” questions.
Would anyone be so kind to tell me step by step how to do this? I am on WP 3.6 and the latest version of Enfold (August 21, 2013).
Kind regards from The Netherlands,