Amazon is currently having trouble correctly handling EPUB metadata sent through its Kindle Personal Documents Service. If you send EPUBs to your Kindle account via email, or use a third party application like our Push to Kindle service to send web articles, you are probably affected.
Push to Kindle now supports sending web articles to Dropbox accounts. If your e-reader offers Dropbox integration, try it out. We’ve also made our EPUBs more accessible to other apps on Android.