[Plugin: FancyBox for WordPress] Changes in Admin-Area do not apply

hello,
just installed the newest version of fancybox. the boxes work, but not correctly. if you look e.g. on this post, you see that the title below the picture looks a bit strange with the white border around..
but the main problem is, changes which i make on the admin page of the plugin do not apply. i wanted to change the effects, but nothing shows up… mybe you can help me?

https://www.ads-software.com/extend/plugins/fancybox-for-wordpress/