How do you display the Created and Created By fields on a nintex form? I've tried putting them into variables. That didn't work. I've tried displaying them in a calculated field that I put on the site.
These columns are default SharePoint columns. They cannot be populated in New mode as the form has not been submitted yet. You could use a Calculated Value control to see them after the form has been submitted (edit or view mode) by using the Item Properties.