App Portal on iOS/iPadOS devices that don't support the application (15.3+)

What
If you have an iOS/iPadOS device that is older than what is officially supported by FileWave and you are working ok but you can't get the Kiosk (App Portal) to install.
When/Why
You can revert for now to the old WebClip using the documented process here. This is a temporary workaround.
How
It is possible to activate Web Clip of an old App Portal on devices which don't support new App Portal.
Create new Apple Profile → Web Clip Profile (can be done in both FileWave Central and Anywhere)
Fill in URL field with: 
https://fqdn:20443/ios/recommended_apps/%device_id%#apps replacing "fqdn" with your server's DNS name.
Deploy profile to desired device(s).
Related Content
Automatic updating of iOS Kiosk (15.3+)