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.
Can you please try to remove your current integration and create it again?
I made a test on my side and the submission date was passed correctly to the spreadsheet.
Let us know if the issue persists.
I've opened a separate thread for your concern so that we can better assist you, please refer to this link: http://www.jotform.com/answers/544052
I have also opened one for you, please refer to this link: http://www.jotform.com/answers/544050.
We advise that users open their own threads for each question or concern that they have. We will address the threads accordingly.