Yesturdey did try to share one of products on my web site ( e-comerce) Unaforunaly hit 403 . using FB debuger says is fine and by hiting (View Details) says blocked by robot.txt , thats not true coz in robot txt FB crawer is alowed..

User-agent: facebookexternalhit

Is also disalowed in certan pages only. Did some resurch and can`t find any true help. Any opinions welcome, Thanks