The WordPress app on iOS has some limitations. It doesn’t not deal well with featured images at least for the theme that I’m using. I had to delete a post and rebuild it in the website to get it to display correctly. On the flip side, it seems to be a good way to capture an image from your iPad gallery. The best use may be for capturing media, but not for posting.
… Turns out it’s not even good for uploading media. Strange things happen. Oh well.