Hello you all
I have tried to take it to into a local dealer, but they are not about to repair but to sell a new one.
I am sure it is the display because I bought a new one and everything works well.
It is not dirty so the damage is inside, although outside seems to have nothing damaged.
I have tried to push it further into the holder as Teresa says but …..nothing better…………
It is a pity these types of displays are so bad, because I hit it very very little…
In fact, when riding I am afraid of falling down thinking …..if I hit the display…..the bike will let me down in the middle of the mountains…!
Thank you all for your suggestions