Meta Box

Here again just to post the final code to whom may be interested
Obviously I had to check the doc to get it working because user_register pass a number while rwmb_profile_after_save_user pass an object

function auto_login_new_user(  $user ) {
    $id = $user->user_id;
    wp_set_current_user($id);
    wp_set_auth_cookie($id);
    if(awr_user_has_role($id, 'subscriber')){
      wp_redirect("/proponi-un-luogo/");
    }
    exit();
}
add_action( 'rwmb_profile_after_save_user', 'auto_login_new_user' );

Hi Long
Similar problem here
I followed your link and the autologin works well
But the extra fields I added in the registration form (custom and regular) are not saved anymore
Well, somehow it saves only the user_url
Before adding the autologin function data were all saved as aspected
It seems I'm using the wrong WP hook and the autolign fires before META plugin complete it's work
Any clues?

Here's my code:

add_filter( 'rwmb_meta_boxes', 'agri_new' );
function agri_new( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = [
        'title'  => __( 'Submitter', 'agri' ),
        'id'     => 'user-extra',
        'type'   => 'user',
        'fields' => [
            [
                'name'     => __( 'Nome', 'agri' ),
                'id'       => $prefix . 'first_name',
                'type'     => 'text',
                'required' => true,
            ],
            [
                'name'     => __( 'Cognome', 'agri' ),
                'id'       => $prefix . 'last_name',
                'type'     => 'text',
                'required' => true,
            ],
            [
                'name'     => __( 'Telefono', 'agri' ),
                'id'       => $prefix . 'user_phone',
                'type'     => 'text',
                'required' => true,
            ],
            [
                'name' => __( 'Sito web', 'agri' ),
                'id'   => $prefix . 'user_url',
                'type' => 'url',
            ],
        ],
    ];

    return $meta_boxes;
}

Here's the custom function:

function auto_login_new_user( $user_id ) {
    wp_set_current_user($user_id);
    wp_set_auth_cookie($user_id);
    if(awr_user_has_role(get_current_user_id(), 'subscriber')){
      wp_redirect("/proponi-un-luogo/");
    }
    exit();
}
add_action( 'user_register', 'auto_login_new_user' );