Hello,
Please provide temporary wp-admin and FTP access. We will add pre-created translation files of the theme and Core plugin on your site, as described here – https://xstore.helpscoutdocs.com/article/30-base-theme-translation https://prnt.sc/gPVXtMPM4p0f
Create an account via Dashboard (Users > Add new) with administrator role http://prntscr.com/s3rc9m > provide us with username and password via the Private Content area http://prntscr.com/s5mao7 You can use any email for it.
If you do not know how to create FTP contact with your hosting provider, they will help you.
Read here about translation of WooCommerce – https://woocommerce.com/document/woocommerce-localization/
Regards