Campaigns Translation via API

Hi there!

I'm working on an integration that consumes Braze API endpoints for translation. I created a test campaign, enabled languages and added translation tags on the campaign's content. I was able to export the CSV, add translations, and upload the CSV back. But, if I check the UI, I see almost no difference and I don't find any language dropdown or any other method to preview the translation.

Also, if I call the GET /campaigns/translations method from the API for this campaign, I get the result: "This message does not have multi-language setup".

I'm stuck here and not sure how to proceed. Any advises are more than welcome.

Thanks!