Hi @mengeco,
This is possible with the Free plugin as well.
By default, Complianz will use the Site Language that you configure under Settings > General in WordPress as the language for your Legal Documents and Cookie Banner.
However, when multiple language versions of the documents and the Cookie Banner are required, you can use a multi-language plugin such as PolyLang (Free) or WPML to accomplish this.
Please find our configuration articles describing how to translate your Legal Documents and Cookie Banner using both of these plugins attached below:
https://complianz.io/configuring-for-polylang/
https://complianz.io/configuring-for-wpml/
Kind regards, Jarno