[Plugin: wordTube] Videos not showing

I recently upgraded to WP 3.3.2 (from 2.7 or so) and Wordtube stopped working.
I tried upgrading the JW Player, changing the player.swf link, changing the syntax of the Video link [media id=18] but still nothing…
The videos won′t show anymore.

What am I doing wrong?

https://kerstin-martin.de/babyblog/?p=1359
(There should be a video of C on her training bike)

https://www.ads-software.com/extend/plugins/wordtube/