Hello, Awatif,
1/ We’ve changed the location of translation files for XStore and uploaded translation files for the XStore Core plugin. Please check now.
2/ We suppose this situation is independent of our theme.
Please check how it works when default WooCommerce theme – Storefront is activated. If you have the same situation even with the default theme, the problem can be caused by a 3rd party plugin on your site or something from WP side.
Kind Regards,
8theme team