Hello,
We would recommend you use Loco Translate plugin to translate theme and XStore core plugin directly from the admin panel if you did not work with the translations before. It will be much easier than using poEdit for you.
1) Go to Plugins>Add new> install and activate the Loco Translate plugin
2) Go to Loco Translate>Themes> select the XStore theme. Press “Add new language” > choose the language you need and System location for the translation files http://prntscr.com/sf4s5w . Translate strings and Save your changes.
If you still have any issues with translation provide us with WP Dashboard access to your site in the Private content area and tell us what strings are still missing after your translation.
Regards