Admins IDs (facebook) is your personal facebook ID.
It’s a numeric ID.
To get it, activate facebook connect, then login with facebook,
In the settings of the plugin in the right sidebar, under the profile section, your id is showing up here.
To Show an image from a post you have to activate openGraph settings.
(if you update you have to re setup your tags)
in the general settings or individually on each post or page.
To use the featured image you must set the value %POST_IMAGE% in the related field in the opengraph settings.
Then each time you change those settings, you must go to the debugger on facebook to clear the cache and update your data.
now leave me without the option of images featured from the article
I think you have a plugin in conflict, because Facebook awd add the theme support for featured image, if you can’t see it, maybe something is broken.