If you follow one of the links from the web page http://test2.isek.it from a device on which this app http://test2.isek.it/koo8ooNe/app-debug.apk is installed, the app should start.
Below the relative contents of the app's AndroidManifest.xml file that enables the deep link during installation:
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="lioni-for-innovation"
android:scheme="virgilio" />
</intent-filter>
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>