Thanks for the notice. This will be fixed in the next update of the theme.
To fix it right now, edit wp-content/plugins/et-core-plugin/inc/widgets/recent-posts.php file via FTP as shown on this screenshot – https://prnt.sc/nvqtx1
Please change the code of line 59 in the mentioned file to: <div class="swiper-container" data-slidesPerColumn="3" <?php echo ( $auto_play ) ? 'data-autoplay="'.$auto_play.'"' : ''; ?>>http://prntscr.com/nvy9im
Let me know the result.
I’ve added your suggestion to our task list, but can’t guarantee if this will be added.
Another question, how do I get this instagram slide space remove on the homepage of the website? see the photo: https://imgur.com/BeqQlGs
For only the photos, completing the entire width of the website