Please do not post the same thing multiple times. The board software automatically flags certain posts as needing moderator attention. This happens the most often for new users. I'm pretty sure this is made clear at the time you attempt to post. Posting the same thing over and over again just makes that many more posts the moderators have to weed through later. This makes us sad. Don't make us sad. If your post/thread doesn't appear, just wait a while. Don't post it again. If it hasn't shown up by the next day, then you can try again. I normally go through posts in the mornings, and try to check a few times throughout the day, but I'm not here 24/7. There will typically be a significant delay before posts are approved. Just be patient.
You should be able to just preview the file within your app using the UIDocumentInteractionController, without any intention of sending it to another app.
When the user interacts with the file representation, such as by tapping it, ask the document interaction controller to present one of the following interfaces: A file preview that displays the contents of the file. A menu containing options to preview the file or open it using another app. You can add copying and printing options to this menu by implementing appropriate methods in the delegate of the document interaction controller. A menu prompting the user only to open it using another app.