Wont sync

I use Dropbox and Docs to Go Premium for my iPad. Used to sync well but with latest update will not sync at all. Says it is syncing but then the new files dont show up. When I email them (excel files) to myself and then open them in Dropbox they dont look the same as on my computer. Dont buy.

AlanVDunn about Docs To Go Premium, v5.2.9