JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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 sent a test submission in your latest form using the direct URL (https://www.jotform.com/61047522345147) and I was able to submit the form successfully.
If you have embedded the form to your website, please give us the URL of your website so we can investigate your issue further.
In the meantime, perhaps clearing the Form Cache can help. Here's how: How to Clear Your Form Cache?.
I will wait for your response.