Hello, @oceaneokio,
You need to translate strings for the Core plugin.
Go to Loco Translate > Plugins > select the XStore Core plugin. Press “Add new language” Translate the necessary strings and Save.
I have captured a video for you on my test site. please watch it complete video for a better reference:
https://www.veed.io/view/8cf6d718-12e0-429a-9ebf-252cf712208c?sharingWidget=true&panel=share
Regards 8Themes Team.