Adding an oEmbed link to your WordPress site requires one simple step, which you only have to set up only once for your whole site:

In the theme functions.php file you have to add following line:

wp_oembed_add_provider( 'https://preview.vidalytics.com/video/*', 'https://preview.vidalytics.com/oembed' );

Then, just pasting video's Quickshare Link (not oEmbed link) would make the video appear in the video editor: