the plugin 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 plugin 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 media library with images on the subdomain. Imported images should be saved in a folder of the subdomain: