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.
Upon checking your email address email@example.com, I see that it is in the guest account. I would suggest signing up an account to us to better fully utilize the form builder
To change the background image, you can do that using the Form Designer Tool. In the "Background Image" section, you can change the page and form background. To remove it, just click the "x" button at the side.
I hope that helps.