adding roles who can acess the premium content

/* adding roles who can acess the premium content  */
add_filter(
    'jnews_paywall_unaffected_role_list',
    function ( $roles ) {
        $roles = array( 'administrator', 'editor' ,'author' ,'contributor' ); /* you can add other role by separate them with commas */
        return $roles;
    }
);