Achievements are displayed in spanish

Hello!

I am lost here on the site, been trying to find out a solution for my issue for over 20 minutes, but with no success. I discovered that my achievements in the Xbox Live App in Windows 10 are displayed in spanish. No idea why or how to change it. I do not
own a console, I tried to search for any language settings in the app, but I found none. I tried to search language settings or preferences in the browser and I got lost on the website and could not find anything here at all.

The thing is not everything is in spanish, just the achievements...

Any ideas how to change it to english?

:)