'fb:admins' could not be parsed as type 'fbid'.

I have used Social Pug plugin to share the Articles from my site.
Today I added this video here. http://xyz.nestaway.com/presenting-instawed-kit/
When I try to share vis FB, I just get the text.
I am unable to view the thumbnail.

I did use this https://developers.facebook.com/tools/debug/og/object/ to debug this.

It says " at URL 'http://xyz.nestaway.com/presenting-instawed-kit/' of type 'article' is invalid because the given value 'nestawayhomes' for property 'fb:admins' could not be parsed as type 'fbid'"

I tried useing complete id= 66**********825 using http://findmyfbid.com/ it didn't work.
We used this article as a reference http://www.wpbeginner.com/wp-themes/how-to-add-facebook-open-graph-meta-data-in-wordpress-themes/

Haven't used any Yoast plugin.
I just added manually, but still I am getting error, could you please help me fix this.

This is my FB page https://www.facebook.com/nestawayhomes/?fref=ts please let me kow