I run since some month a wp installation now with wp-pro-quiz.
There is a menu entry called "Regel Quiz", where the users could run a quiz about rules of a game.
This worked fine.
Now ( and i really can't say since what time ) I detected, that the users cannot run the quiz anymore since the questions are not visible anymore, but instead the users are getting the info "Sorry, you do not have sufficient privileges to view this post.". However they can see the answers and can click on the answers.
Only the administrator is able to see the question.
Any Idea ?