What do you mean exactly? So the tablets' language is set to English (when first setup) but what do you mean when you refer to your Samsung account? The members app or the website? Is it just your Samsung account or anything else in Turkish I.e apps or websites. Have you added your Google account to the tablet yet? If so any language problems. Presume your Samsung account is set up properly ie correct language and location. Dies your Samsung account work as expected on other devices? Can you confirm if your tablet is wifi or 5G variant.