Thanks musicmaster for the support.
Now Domain and Domain_ssl is correct, physical_uri also and I also changed PS_SHOP_DOMAIN and PS_SHOP_DOMAIN_SSL in the ps_configuration table but i see this error message:
/web/htdocs/www.mydomain.it/home/prestashop/vendor/composer/ClassLoader.php on line 444
my shop is in the folder www.mydomain.it/prestashop/, you know why this subfolder /home/ between my domain and my physical_uri ?
thank you very much, best regards