Have to manually add a thumbnail before you can add a video

This plugin should not advertise itself as a video gallery. You can’t actually add a vimeo or youtube URL directly in the plugin interface, as the fields for that which are shown in their instructional video don’t appear until you have added a still image from your media library to the gallery. Any plugin designed to be a video gallery should be able to load the video’s thumbnail from youtube and vimeo when the URL is entered without having to manually upload a separate thumbnail to your media library first.