Issue with Lightbox Image Titles

on your page you use that ( by the way deprecated window.load is involved too ) script:

jQuery(window).load(function(){
	jQuery('a').removeAttr('title');
	jQuery('img').removeAttr('title');
});

without the titles – the lightbox got no info what to show!
The question now is when you inserted the script, because even in the earlier version of enfold this could not work.

Have a look into the alb you set – maybe there is the option not to use the title but f.e. description.
Or just not to remove the title – but save it to another attribut and save back on click or on mouseout:

can you try this instead :

function temporary_removal_title_tags(){
?>
<script>
  window.onload = function() {
      var links = document.querySelectorAll('a, img');
      for (var i = 0; i < links.length; i++) {
          var link = links[i];
          link.onmouseover = function() {
              this.setAttribute("data-tooltip", this.title);
              this.title = "";
          };
          link.onmouseout = function() {
              this.title = this.getAttribute("data-tooltip");
          };
          link.onmousedown = function() {
              this.title = this.getAttribute("data-tooltip");
          };
      }
  };
</script>
<?php
}
add_action('wp_footer', 'temporary_removal_title_tags');

btw: maybe you decide to darken the lightbox background a bit more – because the png files with the transparency will then be better seen:

.mfp-zoom-in.mfp-ready.mfp-bg, 
.mfp-zoom-in.mfp-ready .mfp-preloader {
  opacity: 0.9 !important;
}