All, please help! My Wife and I both use Dropbox. In my DB, there's a folder that I have shared for our 'joint' stuff. In that folder, is my Wife's Christmas list! However, when she tries to open it from within the DB App using her iPad Mini, Excel opens fine, but says that it's it "Read Only" and she must sign in with either her Microsoft account, or her "Work/University" account.). Now, I can go into the same folder using my iPad Air and Excel opens fine and I can edit the document without a problem. Help! [Edit] - I should add that we are both using the free versions of Office 365 for iPad, without any additional subscriptions and that I *think* this spreadsheet was created in Office 2007 on her Windows laptop (she has just recently moved to a MacBook Pro and has Office 2011 on that).