I see my licence for Justified Gallery needs renewing. Unfortunately there is a compatibility issue with the plugin WP Retina 2x. WP Retina 2x enables one to disable the Responsive Images feature of WordPress 4.4+. If this feature is enabled Justified Gallery stops displaying, the gallery is not there!
If I was to renew my licence would you then consider an update to fix this compatibility problem?
Sure. We’ll dive into this plugin to check for possible compatibility fix. Probably this is an issue on Responsive Lightbox itself, not the Justified Gallery addon, but we’ll be able to tell you more about it soon.
We’ve been invastigating this and we can’t do much about it. Depending on WP Retina option (one you mention above) the image src is being removed from the code and Justified Gallery doesn’t know the images url and can’t generate a gallery.
The way it’s done in WP Retina does not give us any options for a fix, sorry.