Hi Maria Cristina, yes I’m from Rome 
have you tried to follow the scheme I already published on a previous post? That’s the one I’m actually using in my setup and for a sake of clarity I write again for you down below.
(Nuki) (Urmet)
Red > 1
Purple + Black > 6
Green > CA
Orange > 2
Blu > 9
If you have already experimented this connection schema without success, feel free to write me back with some more info as for example what function doesn’t actually work and which one does. Ex. You are able to hear, open but no rings, etc… Good luck 
Luigi