Hello,
https://xstore.helpscoutdocs.com/article/30-base-theme-translation Related posts, Continue reading, Leave a reply, Comment – should be available for translation for XStore theme. Follow this article https://xstore.helpscoutdocs.com/article/103-translation-files-update to update the translation files.
About images of related posts, try to disable all the third-party plugins, and check how images load then.
Regards
