Security Violation Error When Opening App

My employer has a mobile app I've used for the longest time. Recently when attempting to open the app, I receive a strange security violation message. I've done basic troubleshooting including deleting and reinstalling. The app was working fine before and none of my other apps are doing this. Does this have something to do with the developer or is it because Apple banned their app?

The app in question is called: ZC Mobile.