the plug-in attachment is an extension of NextGen Gallery.
This plugin allows you to import images in the gallery of Nextgen from the Media Library Wordpress.
However my website is installed on a second level domain, while the images are on a subdomain. So, the library media Wordpress saves images on the subdomain.
site.com (main domain)
img.site.com (domain for images)
The plug-in attachment, it only works with the images uploaded to the second-level domain.
I would like someone to modify the plugin to make it work by uploading pictures from your media library with images on the subdomain. Imported images should be saved in a folder of the subdomain: