A family of Microsoft word processing software products for creating web, email, and print documents.
This is just a guess, but when you create a text box, please check the Format>Paragraph menu from the OS X menu at the top of your screen. An excessively large left indent (called Before text: in the dialog) can appear similar to a right-aligned paragraph. If that is not the issue, that same dialog should enable you to change the paragraph settings. After you get it right, right-click on the text box border and choose Set as Default Text Box to make the settings permanent.