[Plugin: NextGEN Gallery] [NGG] slideshow parameters do not work

Hello guys,

I used NGG to create a slideshow on the starting page of http://www.ifsz.de.
(running on wordpress 3.21 ans NGG 1.8.3)

I used the code [slideshow id=1 w=950 h=340] to insert it it on the homepage.

I want to have two parameter to be used: shuffle the pictures and do not show the loading pictures (see: http://our-roots.de/slideshowoptions.png in german)

I thought ticking the options would do the trick, but sadly it will not work.

Do I miss something?
Thanks for your help and greetings from germany
stephan

http://ww.wp.xz.cn/extend/plugins/nextgen-gallery/