Very disappointed about chroma key – Video Toolbox - Movie Maker Review

I was really exited to get this app because it had chroma key but when I found out that it was not functioning properly it let me down I am very disappointed with apple and the Creators of this app please fix the problem because I need this app to make a YouTube video please get this fixed in a timely fashion.
Review by Every little on Video Toolbox - Movie Maker.