Scrivener for iOS is a great standalone app, but syncing through Dropbox isn’t to everyone’s liking.
I stopped using Scrivener for iOS and Dropbox, and I switched to iCloud (any cloud service will work) and markdown editors instead. This post explains how.
If you are unhappy with Scrivener for iOS (as a recent purchase that doesn’t work as expected) and don’t want to continue using it, you can contact Apple and ask for a refund.