Like/Send-Button does not appear

No matter, what i do: the FB-Button Like/Send does not appear...

Thing i tried at least (and is still that way configured):
- "use shortcodes in the contents of your post" (as automagically set Button before or after content does not work either)
- i only want the Send-Button

Attached are some Screenshots, to show actual Settings and usage of the shortcode.

PS: the URL of an article, where the shortcode is actually built in, but does not show.

PPS: at the Footer-Section, the Widget "Facebook Like Box" is active, alive and running with no problem...

Any ideas or hints...?

Thanks in advance,