What version of pages are you using on your desktop and are you only having this problem in this document? If this is only occuring in that doc, then it is most likely an issue with in that doc its self and not pages. If that is the case try duplicating it on you ipad and sharing it again or copy the text to a new doc. If this issue is occurning with multiple docs then you may want to try removing the pages preference file and cache folder from your user library. However, with out more information that is all just guess work.