Hi,
Same behaviour sadly.
Replaced head motor, still no movement of head on startup. If I plug the head motor in the head does move in the app but it is jerky, if I hit Shake Head it does nothing. Everything else on the App works as advertised.

I noticed the Battery Charge on the App was saying 0%. So I plugged in, switched on the battery an then switched on with button 6. The head does a proper check this time, flashes purple, fast, solid red and a whistle and then shows flashing purple as if charging. If I then just remove the charger he works as advertised and I can drive the head (though a little jerky) and shake head works along with all other functions once connected with the app.

Any ideas?
Thanks,
J.