JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Yes, you can change a form that has submissions. The submissions will not be affected by your newly added fields. However, if a filed is deleted after getting submissions, the related data with the field gets lost. Please make sure that you backup your submission data. Please follow one of these guides to backup your data:
If you have further questions about any other thing about JotForm, we will be happy to help.