Unreliable information
Not sure how this app is deriving the device UUID, however, what is displays is not correct nor does it match up with the real device information when cross-referencing the UUID as reporter by Apple Configurator.
Response from developer
Hello Giuseppe :) Thanks for the feedback. I'm currently working on a major update to the app, including a complete visual refresh. The app actually wasn't actively maintained for many years, so some parts of it haven't kept up with changes Apple has made over time. The UUID shown in the app may not match what you see in Apple Configurator because apps no longer have access to the same device identifiers they once did. I appreciate you reporting this, and improving the device information shown in the app is something I'm looking into as part of the ongoing update!