I use another plugin for the Dokan marketplace, and a bug appeared and they told me to check with you because it came from the theme and the slider function, I put the discussion in private
Please insert the site admin access into the Private content below the message area. We will take a closer look at the case.
Please, confirm the permission for plugins deactivation, and switching to the parent theme. As soon as we complete the testing we will enable all back, however, the site would be without plugins for 15-20 min. You would better make the full backup of your site.