My youngest daughter just love the rabbit but I am afraid she embraced it too hard and now one of the ears is slightly more advanced than the other.

I have tried to move it backwards but then again it comes back to the wrong position. Any hint??

Did you try to move the ear manually? For example, put the ears at "noon" position and then, send a message to see if they are coming back to their position.
The other solution is to do a usine test. Unplug your rabbit and then plug it with pressin the button. Stop pressing the button when the lights are red. At this time, the lights are all white and one ear is turning. Then press the button and you'll have one ear wich is going to move. Press another time, and then, you'll have a sequence of different lights. Press two times more.

Did the two ears turn? In each way? Plug back your nabz, and do another test with sending you something.

If it still doesn't work, contact the support.

Thanks, I will try that