Apparently the app has been hidden in the Windows Phone store and uploads are blocked because of some issues with the app. The devs commented on a thread at WP

Apparently the app has been hidden in the Windows Phone store and uploads are blocked because of some issues with the app. The devs commented on a thread at WP Central - http://www.wpcentral.com/comment/354383#comment-354383 http://www.wpcentral.com/comment/354383#comment-354383