Article date

Hi,

Trying to get the article date showing within articles. Ideally Published Date, but none of the Created/Published/Modified options are working. Have followed the instructions at yootheme.com/support/question/97310 but no luck.
Show Create and Published dates are turned on across Menu Item Options, Global Article Options and within an individual article.
I've checked rendered page source to make sure it's not there, but hidden by font colour.
Any help appreciated
Andy