Set a Default Language
In Form Settings > General you can choose a default language for your form.

Select a specific language from the list if you want to override these defaults.
AI forms: When you pick a default language, the form’s interface stays locked to that language and our built‑in auto‑translation—which normally follows the visitor’s browser language setting—is turned off.
Static forms: Static forms always display in a single language. Selecting a default here simply sets which language the interface will use.