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.
You should be able to check your forms email history if they were sent successfully or not directly from your account settings. Here's a guide on how to access that feature: http://www.jotform.com/help/293-How-to-view-all-your-form-Email-History
I also checked your form titled "Soporte Mesa de Ayuda", and you have errors in your autresponder.
The autresponder won't be sent to anyone because there's no email field selected on it. Please edit or update it to avoid problems.
Let us know if you need more assistance on this.