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.
Are you perhaps trying to integrate the form to Dropbox? You can use this guide http://www.jotform.com/help/77-Upload-to-Dropbox-with-JotForm
BUT I think you haven't registered for a JotForm account yet. You should create an account first.
Use this link to create an account http://www.jotform.com/signup
Use the same email address you used so that the form's you've already created will be transferred automatically under your newly created JotForm account.
Please contact us anytiem if you need further assistance.