Trying to open SkySafari 6 Pro results in "File damaged. Please delete and download again from App Store".
After deleting, going to App Store: Buy for €44,99 !?!? What??
Before deleting, I checked in App Store, and at that point it showed "Open". In other words, it did know that I owned SkySafari 6 Pro.
System: MacOS Ventura