Hello,
Thanks for using our theme.
1/ Edit product > [8theme] Product Options > select Primary category, or disable categories via Theme Options > WooCommerce > Shop > Products style > Product Content Elements
2/ Please read about the translation of the theme – https://xstore.helpscoutdocs.com/article/30-base-theme-translation
WooCommerce – https://docs.woocommerce.com/document/woocommerce-localization/
Core plugin – go to Loco translate > Plugins > XStore Core > New language > Choose a language + Choose a location – System
Regards