Our AI engine is currently only compatible with English, Spanish, French, German and Portuguese. Sources (RSS feeds, Twitter accounts, etc.) in languages other than those can be added to your rasa.io sources list, but our system might or might not be able to pull in new articles that those sources produce.
When an article is brought into our platform from a source in a language that is not listed above, the AI cannot always effectively assign topical tags to the articles, which may limit our capability to personalize the articles according to individual subscriber interests. This may cause many of your articles to render as "Inactive" in the Upcoming Articles page, (where you do have the option to toggle them back on). Our inability to properly tag this content will also impact your Topics analytics.
These articles explain in more details the use of topical tags and our AI which you may find helpful.