I've been using the Kindle reader app on my iPhone and it was working as advertised for a while. However, yesterday for no apparent reason it has stopped being able to download books. I bought a book, went to my list of books in the Kindle app, and tapped the "download" control. The message reads "Downloading 0.0%" and just stays there. I tried downloading another recent purchase. Same deal. I tried restarting the Kindle app, and then the iPhone, but that didn't help. I tried going onto the Amazon and "sending" the books to my iPhone with no result. I made sure the iPhone is connected to my home wi-fi network.
Has anyone else seen this problem? Know of a solution?