[Theme Horse Support Team]

Hi lilia_onciu,

Please create your own new topic next time while posting in forum. Because other users also get notified while posting on other’s forum which may be useless for them.
Did you added the featured image in the post/ page.View this below screenshot.
http://awesomescreenshot.com/03a4ni5ref

You need to add images in featured image section. For more info view this link https://www.themehorse.com/theme-instruction/ultimate/#slider

Thank you!