You can check any piece of your document for formatting by left-clicking your mouse on a piece of text that interests you, and then type M-s. EZ will respond by listing all the formatting for that section at the bottom of the EZ window, and highlighting all the text that that particular formatting applies to.
You can get rid of any one piece of extra formatting by typing M-S over and over again, until the item that you want to get rid of is surrounded by a pair of asterisks. For example, if M-s says that, for one paragraph, the styles are:
Styles: underline<-smaller<-bigger<-**center**then center is the formatting that you can remove. If you want to remove smaller instead, just type M-s until smaller is surrounded by asterisks instead.
Then select plainer from the front menu card, and you've done it!
You can get rid of all the formatting at once with the plainest menu item.
If your document still doesn't print, but does include footnotes, then see the stock answer on Document with FOOTNOTES not printing.
For further information, type help from your athena% prompt, and look under Text processing for information on using EZ.