Okay. The widget you are talking about is installed and it works. Its the second part of your answer, what is interesting for me. The “full width-function” for single pages. And this is only possible in the ProVersion (for about 39 $), right?
Thanks!
The sidebar is working now as I reset the “default” page template. One problem ist left: Now there is a sidebar on the left AND on the right. How can I remove the left one? And is it also possible to show the sidebar only on single pages?