Thank you for the information regarding the older iPad 2’s. If that is the case, I am a little sad because your app home page states iPadOS 9.3 or later which gives the impression that the iPad 2 hardware would be compatible as long as it can run 9.3.5.
But also, it doesn’t really explain why installing the space desk app on an iPad Pro 12.9 1st gen (iPadOS 16) only installs spacedesk app version 1.0.49 which isn’t listed within the version history on the app’s home page. Shouldn’t this iPad model be able to install the most recent spacedesk app version 1.62 ? This IPad is also not managed and is just a fresh install from the app store.