6. Products Tab
The options in the Products Tab of WooCommerce Direct Checkout allows you to change the default behavior of the Add to cart button in the products.
6.1. Replace Add to cart text
This option allows you to replace the Add to cart text of the WooCommerce products.
6.2. Add quick purchase button
This option allows you to include a direct purchase button in the products page.
6.3. Add default attributes in variable products
This option allows you to set the default attributes on variable products if they are not selected on the product admin page.
This is very important because the Add to cart button will be blocked if the attributes are empty, and some users may leave the site if they think it's broken.