I am trying to update and publish an existing page. I can "Update" (and it is "revised" with new date/time) but, after nearly two hours, I can't figure out how to "Publish". I have read dozens of posts in the forums to no avail. This site was designed and originally published by a designer (now gone) with the "Sentence" theme. I have tried changing the screen options from one to two columns and back again, but only get the "Update" button. Thank you.