What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
If I understand correctly, you must be referring to the Custom Thank You Message and the Autoresponder E-mail of the form.
As of now, the multi-language tool does not affect the Thank You Message and the form Email message.
If you need the Thank you message and Auto email message translated, you will have to do it manually on them. That is, you will need to translate them in a static way. It will not dynamically change in accordance to the language the form have when using the multi-language tool.
user guide: -How-to-make-your-forms-multilingual
Hope this help. Please let us know if you need further assistance.