Yes OP, the half moon is the rotor of the movement and its turning inside of the case is used to charge the movement. Seems like it is stuck and since its not moving the watch isnt charging either. The handwind should still work though just give it a try and im sure your TD will help you as this is kot something that should happen to a new watch.
Sent from the RWI mobile app
Any idea if the fix is easy enough to take to aa watch repair main here in uk or is it worth the ball ache to send it back to @puretime?