Hello,
We are sorry but we are unable to provide support for customizations under our Support Policy.
You may check https://ru.wordpress.org/plugins/woocommerce-checkout-manager/ plugin if you need to make changes on the checkout page and check this article to find out how you can edit email templates https://www.cloudways.com/blog/how-to-customize-woocommerce-order-emails/
Contact WPKraken team if you need help with customization.
Regards