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 tested the form embedded to the page your referenced and was not able to reproduce the incomplete values error. If your form is still not working on your end at this time, try replacing your current embed code with your forms iFrame code:
If that does not work, let us know and we will be happy to have another look.