I suspect that something is setting the class”postbox” to class”postbox closed” in the required div and it. Maybe another plugin or theme is changing this postbox that Quiz Cat uses to display the questions.
Yes, you’re right. The block with question creation was hidden via css. I didn’t find it right away because the first time I created questions everything was fine. Problems appeared when I created the second quiz. I didn’t have to install an additional plugin, I just added the code in the theme settings. Thank you for your help, success and prosperity to you