Hi

Take a look at wp-config.php in the root directory.

You should add a line that looks like this:
define (‘WPLANG’, ‘it_IT’);

The part that says “it_IT” has to match your theme’s MO file postfix (e.g. awesomeone-it_IT.mo).

If the line says:

define (‘WPLANG’, ”);

then WordPress is set to English and it won’t look for any translation file.
I hope it helps!

Thank You