Hi There,
Thanks for reaching out and sorry to hear that you're having trouble in using language settings inside XD.This is odd that XD got installed in Spanish, even if you have set creative cloud language application to english.could you please share the language of your OS also please try to change the language of Adobe XD with below mentioned steps,please refer attached screenshot for reference:
Click on XD->Preferences->Language-> Change language to English-> Restart XD
Below are some useful links to change language from creative cloud
Change the language setting of your Creative Cloud apps
https://helpx.adobe.com/xd/user-guide.html/xd/help/change-app-language.ug.html
please feel free to update this discussion in case you need further assistance and we will be happy to help..
Thanks,
Chethan