The Priva Operator uses the default language of your browser. Open your browser settings to change your default language. If the desired language does not exist, Priva Operator will revert to the default language of English.
If you are using the local version of Operator, you will also need to install the desired language. To do this, start up the Gateway setup app and select the preferences tab. From the drop down list, select the language you wish to install. The language will then be installed in the gateway. The local Operator is limited to English and one additional language.
See also:
What languages are supported for Compass Operator?