It may be possible to do like this: www.wpallimport.com/documentation/password-protected-files/. If you need assistance, reach out to our support so we can help: www.wpallimport.com/support/
You can learn more about importing into custom fields here: www.wpallimport.com/documentation/theme-plugin-fields/. If you have any questions or issues, feel free to reach out over at www.wpallimport.com/support/.
You can just import both product types at the same time, see: www.wpallimport.com/documentation/import-variable-products-woocommerce/#simple-and-variable
