Hei ElectricFeet! Thanks for the input!
I realized what my problem is …
I put “/en/” and “/it/” in the URL. I thought that the link was contextual of the page that I visualized. I thought that by click on the flags would take me back to the same page translated in the right language. I realized that I have to put the full URL, and the link always refer to the homepage.
p.s. Sorry for my bad english!