Please, check my code! :)

HI! I wrote this code, but for some reason it does not add new tabs under the product. Where did I go wrong? THANK you!

add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
function woo_new_product_tab( $tabs ) {
  // Adds the new tab
  if(is_product_category('Gift Cards')){
  $tabs['test_tab'] = array(
    'title'     => __( 'Private policy', 'woocommerce' ),
    'priority'  => 50,
    'callback'  => 'woo_new_product_tab_content'
  );
} elseif (is_product_category('PayPal')){
    $tabs['test_tab'] = array(
    'title'     => __( 'Private policy', 'woocommerce' ),
    'priority'  => 50,
    'callback'  => 'woo_new_product_tab_content2'
  );
}else (is_product_category('Gift Cards2')){
    $tabs['test_tab'] = array(
    'title'     => __( 'Private policy', 'woocommerce' ),
    'priority'  => 50,
    'callback'  => 'woo_new_product_tab_content3'
}
  return $tabs;
  
}

function woo_new_product_tab_content() {
// text
  echo '<h2></h2>';
  echo '<p>Description</p>';
  
}
function woo_new_product_tab_content2() {
// text
  echo '<h2></h2>';
  echo '<p>Description2</p>';
  
}
function woo_new_product_tab_content3() {
// text
  echo '<h2></h2>';
  echo '<p>Description3</p>';
  
}