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 did check your form and found that you have added two submit buttons. You seems to have added custom css code to change the position of the submit button. That is the reason why you do not see the delete (X) button in submit button.
You need to just click on the submit button and then press the delete button of your keyboard. Please check the screenshot below on how to delete it:
On your question related to the background color:
Please inject the following custom css code in your form to remove the background color of the submit button:
The following guide should help you on how to inject custom css code in form: http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes
Hope this helps.
Do get back to us if you have any questions.