Ifon wont resize.

Hello,

I cant seem to get the iframe to fully resize
https://www.shipofheroes.com/forum/

i put the code in as so in overall_footer.html

<script type="text/javascript">
 
$(document).on('mouseup', '.postimage', function(){
      var w3allappend = "getw3all_lightbox";
if ('parentIFrame' in window) window.parentIFrame.sendMessage(w3allappend);
});
 
  $(document).on("click", "a", function() {
   var href = $(this).attr("href");
   var w3allappend = href;
 
 if ('parentIFrame' in window) window.parentIFrame.sendMessage(w3allappend);
 
});
 
  $('form').on('submit', function() {
   var href = $(this).attr("action");
   var w3allappend = href;
 if ('parentIFrame' in window) window.parentIFrame.sendMessage(w3allappend);
});
</script>
<script type="text/javascript" src="https://www.shipofheroes.com/forums/iframeResizer.contentWindow.min.js" defer></script>

saldy this still isnt working tho ?? is it because our site is https and not http?
please help any way you can.