We'll create fresh WordPress site with Remote Thumbnail installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Lightweight plugin to use remote images for post thumbnails and featured image. Enter remote image url into custom field ‘remote_thumbnail’ of any post.
Images will not be downloaded, therefore will not use up space from your hosting. In order to keep the same aspect ratio as an uploaded, cropped image with no distortion, the code generated will be an inline-block DIV with the image set as a background.