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 test submitted your jotform http://www.jotform.us/form/51476149126154 that have the Spreadsheet widget on it.
and it seems to be working just fine. I was able to submit the form successfully during my test submission as I was able to see the Thank You page.
Please let us know if issue still persist.
You're right. Yesterday I had multiple people try it and it all got the failure to submit when the Spreadsheet was hidden. But today I found it worked. It was strange, but thanks for checking in on it!
Thank you for taking the time letting us know all is good now.
Contact us again anytime should you need assistance on JotForm