Configurable products is not importing correct at facebook catalog

[davirs]

Hi. I setup my store with the facebook wizard without problems. But the configurable products is not displaying correct at the facebook store, example facebook catalog:

Catalog at facebook store:

Facebook not sets the configurable product to represents all the product sets. Facebook select a product size to display at facebook store.. All another option is not displayed.

1 - How to setup this extension to import correctly my products to facebook store?
2 - There is some documentation to use this extension by the right way? for example, there is nothing here about product atributes configuration:

Magento 2.4.0