If you are a member of the beta program for Fade In and have been testing a pre-release build of the software, you'll need to download the latest beta build. If you do not have that download information, contact the developer to receive an up-to-date version. (Beta builds have, by design, a time limit after which they are intended to be replaced by either a new beta build or the finalized release version.)
If you are a regular user of Fade In, simply download the latest update of the software from your personalized download link. (In this case it is possible the beta notification was left inadvertently turned on, and has been corrected in an update.)