Hi av_admin_1984,

Thanks for reaching to us.

1, 2. The checkout form is the Woocommerce functionality and WoodMart theme does not have any options to add or remove the required and optional fields in the checkout.

You can slightly configure the checkout in Appearance > Customize > Woocommerce > Checkout.

Please check this manual:
https://woocommerce.com/posts/customize-checkout-fields-woocommerce/

3. I kindly request you to conduct a check by activating the default WordPress Theme, such as Storefront or Twenty Twenty-Three (Appearance > Themes) and keep WoodMart Core and Elementor or WPBakery plugins activated. This is to ascertain whether the issue you are experiencing is due to our theme or not.

If the problem persists even with the default WordPress theme, it would suggest that WoodMart theme is not the cause of the issues.

Regards,