Appium-Inspector and Felgo(QT/QML) Android app

I have QT Android app written using Felgo and want to test it with Appium.
When I try to find (inspect) elements in Appium Inspector (with UIAutomator2 driver) it shows only few “global” Views:

So I can’t locate elements in Appium Inspector and in Automator Viewer also.
On Felgo forum people advised me to use Squish.
In other places I found few answers similar to this:
“Qt supports accessibility on both QML and widgets. Squish uses QObject objectNames, for Appium you e.g. in QML set attached properties.”

Is it possible to test this application with Appium?
What are general requirements for testing apps with Appium, especially QT apps?

Thanks in advance.