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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
By following guide from the below, you can easily customize the warning messages for your form,
If you need any extra information or help, please do let us know.
I checked your form and found the related message "Você esqueceu de preencher este campo é obrigatório." on "This Field is Required". Please, see it from the below:
You can easily find it by using the "Command + F" search function of your form. After doing the "Command + F" combination copy & paste the "Você esqueceu de preencher este campo é obrigatório.", it will find the related sentence. Please, try this one and let us know the results.