Are you able to look in the developer console of your web browser to see if any errors are being reported. (Normally you need to do F12, then switch to the 'Console' tab.)
Or, can you attach a screen-grab of the edit quiz page.
Are you able to look in the developer console of your web browser to see if any errors are being reported. (Normally you need to do F12, then switch to the 'Console' tab.)
Or, can you attach a screen-grab of the edit quiz page.