Simple display function error

Hi Marcelismus,

first of all thanks for the great Plugin.
I just installed the most recent version of Appbox and now the simple display doesn’t work anymore. The screenshots for more details are available.
Site: http://obd2.autoscout24.com/apps/alle/

Is this a general problem or is it unique? And do you have a clue how I can colve this?

Thanks for your help!

http://ww.wp.xz.cn/plugins/wp-appbox/