I realize that this post was a year ago, but I am having the same issue. I also see that something has added the defer attribute to the script tags. However, I have deactivated any plugin that would have added the tag, but it still appears. Is there a way to remove the defer tag (other than deactivating or removing the plugin)? I really prefer using your Gallery and Lightbox plugin. It gives me so many more options (particularly for thumbnail sizes and styles) which I really like. I am currently using it in the footer gallery. It was working at one time, but no longer. Here is the link https://owlbert-eyenstein.com. Any help, suggestions or thoughts would be greatly appreciated.