Hello,
You are using our of date version of WooPress theme that could conflict with the latest version of WooCommerce plugin. First of all, we need to update theme but we can’t do this without FTP access to your site. So, provide the access to allow us update theme and finish investigation.
Tell me, please, if you did any changes in the woopress theme files? If yes then move them all to child theme https://www.8theme.com/demo/docs/woopress/Theme_Installation/Child_Theme because you will lose all the modification made in theme files after theme update.
Regards