Reply To: Editors can't access to Newsletter (404)

Hi Stefano, i tried with
remove_submenu_page( “admin.php”, “newsletter_main_index” );
remove_submenu_page( ‘admin.php’, ‘newsletter_main_index’ );
remove_submenu_page( ‘newsletter_main_index’, ” );
remove_submenu_page( ‘newsletter_main_index’, ‘admin.php’ );

with no luck, your input is apreciated