Can't find PageNavi plugin settings

This is embarrassing… I set up a blog a year ago, then imported the whole post database and Atahualpa theme settings to another host. Had to tweak a few items and re-upload some pictures, but everything then worked identically… except for PageNavi. I remember that it took a while to find a way to make the PageNavi font size smaller (and also shrink the box around each number). Unfortunately, I didn’t keep a record of how the changes were made.

I have now compared almost every relevant file in the two version, via both cPanel’s file manager and WordPress itself, and can’t find any difference.

Could someone please tell me where to look for this setting?

Thanks!