Hi again,
Sorry I misunderstood you the first time.
og:site_name and og:title are two different things for a good reason.
The post name is: What is “Kiai”?.
It post name is not: What is “Kiai”? | The Martial Way.
Facebook is not going to magically string them together, so I’d have to modify the plugin so that the site name is also output into the og:title (it would be easy), which honestly I have no plans to do.
Other plugins that handle open graph might be able to combine those two, and if it’s critical to your blog then it might be a good idea to try an alternative.
Sorry I can’t be of any more help.
For what it’s worth I plan to give this plugin some long overdue attention soon.
Good luck.