Hello,
Please read this article – https://www.8theme.com/documentation/xstore/theme-translation/base-theme-translation/
You need to translate XStore parent theme and XStore Core plugin.
If you need our assistance, please provide temporary wp-admin access.
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.
Regards