My Kindle reading app (version 6.14) is not syncing to the Amazon Cloud. If I read on my iPhone or Kindle, the furthest page read will not sync to the other device. It looks like it's the iPhone app that isn't syncing because when I open the Amazon Cloud Reading web app / website, it syncs to the location of my Kindle.
Any ideas? I've tried uninstalling and re-installing, and I've tried un-registering and re-registering.
I also just tried talking to support via Chat and when I let her know that the reinstall she had me do didn't work, she disconnected the chat.