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.
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Simply keep typing, it's not possible to do an 'enter', but you can continue in a new line by adding the br attribute inside the angle brackets. However, it was not available for heading field. You can add "Text" field and customize it. Example:
Everything works properly, as you can see below:
I hope it helps. If you have any questions or issue, feel free contact us.