Since WooCommerce 3.2 the option to resend the admin new order email was removed. The reason was that it was a pretty much-unused feature as admins already have access to the orders so they could just look it up.

However, if you relied on this feature for some reason and now all of sudden can’t use it, fear not as it can easily be added back with the following snippet.

As always include the following code in your theme’s functions.php file omitting the opening <?php tags