Not working – mDNS Utility Review

Just downloaded (after paying) and when app launches, I see a brief screen which contains network icon then below that line is local but no items. Then after maybe 2 seconds, the app closes and I’m returned to the desktop screen of apps. I don’t think I’ve done anything wrong. Looking back at App Store description, it seemed to indicate that last version was 3 years ago. ? Needs update for iOS 11?
Review by Sandy Stradtman on mDNS Utility.