Hello,
1. Please note that was big woocommerce update, so many elements in the plugin and our theme functionality were changed. So you may need to edit your changes in the child theme to proper work with new versions.
2-3. Could you please provide wp-admin access in Private Content?
4-5. Please update all required plugins https://www.8theme.com/download-plugins/.
To update premium plugins, connect to your server using FTP. Copy extracted plugins folders into wp-content/plugins/
Regards,
Rose Tyler.