jelo wrote:

As expected, but the LimeSurvey is not the place to provide administration trainings. That is out of scope.
You got hints where to look. If your administrator cannot help, I would start using a managed webserver. If you want to configure the server on you own, you might start a thread on a debian forum.
 

The only exception are config set to get (in application/config/config.php) Even with mod_rewrite activated : it don't work.