Hi @madvic
The gifs show WooCommerce, not WP All Import – are you having an issue with the import itself? Also, the attributes appear to be saving correctly (after you save them, navigate to the product page and look in the “Additional Information” tab).
When you save a “Custom Product Attribute”, it’s only saved at the product level. If you want them to be taxonomies and show up via Products > Attributes, then you’ll need to create them via Products > Attributes. In WP All Import this is determined by the “Is Taxonomy” option.
Read here for more information: https://docs.woocommerce.com/document/managing-product-taxonomies/#section-6