[Plugin: QuizMe] how can put a quiz in a post without rewrite after response

Hi,
When I make a quizz in a post, after someone answers the quizz, my post is rewritten: “Submitted by XXXX” and the answer can be read whereas my quizz is deleted …
If I make a quizz in a page there’s no problem when someone responds, nothing is rewritten differently … how can I solve the problem and create a quizz in a post ?

Thanks for your help.