Shortcode for customer number

Hi, We are using a “sequential customer number for woocommerce plugin” which adds a number in the user meta data, looking at the plugin they use get_user_meta( $user->ID, ‘wscn’, true ); to get the value.

We have tried shortcode [wec_order_meta key=’wscn’] to get the value in the email template but this didn’t work.

I saw in the documentation that we may also need meta_customer_order somewhere?

Any help appreciated.