Getting container files when app not in "Installed App" list in Devices and Simulators window?

I need to get at the files of an app (one that I developed). It's sitting there on the home screen of my iPad, and I can run it. But in the "Devices and Simulators" window in Xcode, in the "Installed Apps" list, it's not there. That list is how I would normally get the "container" so I can see the files.

Why would an app that is obviously on the device not be in the list? Is there another way to get the container/files?

Getting container files when app not in "Installed App" list in Devices and Simulators window?
 
 
Q