German shop, shortcodes for VAT, shipping, etc

Hallo,
I like the plugin very much, I use it for a German shop.

That’s why I need the shortcodes for VAT, shipping, etc. from the plugin: Plugin „Germanized für WooCommerce“ (https://de.wordpress.org/plugins/woocommerce-germanized/)

I also use the plugin: „Flexible Checkout Fields“ (https://de.wordpress.org/plugins/flexible-checkout-fields/)
I need that for additional fields: „customer number“( _order_kundennummer), etc.
Is there a way to add to the plugin?

Thanks for your efforts.
Many regards and a beautiful day.
Fred