Virtuso Piano

Hello,
The previous version quit working on my iPhone 5 and on my iPad 2, so I installed the Free 2 HD. The most I can get out of it is one note. Settings, duetto, etc are unresponsive. It was a nice sounding app before. I suspect it is not compatible with Apples updated software. Would like to know if it is possible to make it work, and if there is an update for the app to enable compatibility.

patroubadour about Virtuoso Piano Free 2 HD, v2.3.1