The first one doesn’t seem to have created a onebox either? It should look a little like this:
I think you would need the site you’re linking to include the relevant oEmbed/OpenGraph tags for it to function properly.
The first one doesn’t seem to have created a onebox either? It should look a little like this:
I think you would need the site you’re linking to include the relevant oEmbed/OpenGraph tags for it to function properly.