I have connected and installed the thing and am really excited ... the initial number Doppler were gone after I had the first option 'Tap to Click' turned off in the system extension 'trackpad', and then in the Magic Numpad Preferences 'only tap' had entered.
I think since then the thing is no longer sensitive and works well. In particular, the lack of numeric keypad on an Apple Bluetooth keyboard shall be replaced by miraculously.
kind regards
IS