Change Your Account-Wide Language
Change your account-wide language settings. This setting applies to all campaigns and reports across your account unless you've manually set a different language for a specific campaign.
Change Your Campaign Language
Alternatively, if you offer services to clients in multiple languages, this feature allows you to override your account-wide language settings and change the language at the individual campaign-level. These settings apply to everything inside the campaign, and for all users who view the campaign, its dashboards, and its reports.