Hello, I can't use pages on my iPad anymore. When I try to open a document, it says I need to upgrade to the latest version to open that document. When I click to download the latest version, it brings me to the App Store, but I seem to have the latest version already. I thought maybe it has something to do with the fact I upgraded to El Capitan on my Mac. And I thought I may need iOS 9 now, to download the latest version of pages. But for some time, pages worked normally, even though I had installed El Capitan already. I'm on the latest version of iOS 8. Don't really want to upgrade to iOS 9. What can I do? And does it even have anything to do with that in the first place? Thanks!