Welcome to QSM Pro Support. Hope you are doing well.
This is the first screen that appears when you create a quiz. You need to click on ‘create new page’ button so that you can create questions under that page.
And if this is happening even after adding and saving new questions. Then we need your website credentials to look into the issue. Make sure to make the message as private before sharing the credentials and take a backup of your website to be on the safer side.