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.
Unfortunately there in no possibility to de-select radio button. But you can make some workarounds.
First one is to use check boxes instead of radio buttons because check boxes can be de-selected.
Second is that you can add Reset Form button. Reset button will reset all selection on your form.
Let us know if you need further assistance.