It doesn’t work with iTunes 12

Ive just bought TuneUp in Mac App Store and it doesnt work with iTunes 12.
It keep saying the files are in an unsupported format, but theyre mp3 files.

If it doesnt work with last version of iTunes it must be cleare displayed in the store.
I want my money back!!! Its not a cheap app. Ive spent U$ 39,99 and your app doesnt work...

Li Aquila about TuneUp, v2.4.8