
2 answers
Hi Emily per SFDC help excerpt below the community automatically displays in a users profile language. I have not found where the language can adjust per IP or country:
https://help.salesforce.com/articleView?id=rss_language_picker.htm&type=5You can add the language picker to the header or footer, or to any section of any page; it’s not included on any pages by default. Only guest users see the language picker. For authenticated users, the community automatically displays in their profile language. For guest users, the community displays in the community default language. Customized labels and knowledge articles use the translations added by the community admin in Translation Workbench.