Norton App Lock keeps locking the wrong app

I've installed Norton App Lock (Android 6.0.1). I tested it with one app, and it worked well.

So, test completed, I removed the app from the list of apps to lock.

But, every time that the app is updated or reinstalled, Norton App Lock adds the app back onto the list!

Other apps don't seem to have this problem.

How can I tell Norton App Lock to stop locking that one app? I locked it only for testing, but the testing is complete. I don't want to lock it!

Thank you