Hello,
1/ About static block – https://prnt.sc/Y3y57E2hWWRm , please read this article – https://xstore.helpscoutdocs.com/article/31-translation-with-wpml
2/ WPML > Theme and plugins localization > Strings in the themes and Strings in the plugins > scan XStore theme and Core plugin, then find and translate strings via String Translation.
If this doesn’t help, contact support of WPML plugin.
Regards