Hi,
I'm afraid the article isn't very helpful. The App in question is a Microsoft Store for Business App (Online) - TeamViewer Quicksupport. We've tried deploying it to devices as well as users and in all cases, the app is not installed and is shown as "not applicable" in Intune with no reason as to why it is not applicable. Every other App is correctly installed (if set to required) or appears in the Company Portal (if set to available). Except this app.
Cheers,
Fred