Please help!

This is one of my favourite apps. I use it to help me go to sleep. I love it but this most recent update has killed it. As in its dead. It wont load. I would really like it to work for me but cannot find where to email the publishers to alert them to my issue. I am totally up to date in regards to the app updates, but it still wont load. I am operating an iPhone 4. Please help!

Jazbo1326 about Audiobooks, v6.1.1