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.
If you're using our v3 builder you only need to open the form preferences, go to the advanced tab and there you should find the options that limit the submissions in your form:
In the v4 builder you need to go to the settings tab, click on the form settings option and show more button:
There you will find the options that limit the submissions in your form, setting them to no check should help you to submit the form more than once:
Hope this helps.