Replace slider with static image

Hi @pixlviews,

I hope you are well today and thank you for your question.

To achieve this just add only one post having featured image to slider category.

Best Regards,
Vinod Dalvi

You can try removing it by adding the following CSS code in the Custom CSS option of your theme on the below path.

Admin Area -> Appearance -> Customize -> Activello Options -> Other -> Custom CSS

.flexslider .flex-caption {
    display: none;
}