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.
I'm not sure what part of the form you're referring to since I cannot see a form that you have created. But if you are referring to the JotForm footer, you can visit https://www.jotform.com/myaccount/settings and look for the JotForm footer or branding at the bottom and uncheck the checkbox there.
It would be great if you can share with us the link to your form in order for us to understand primarily your concern.