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 checked your form and did a test submission, once I hit the submit button the thank you message shows up properly.
Please try clear your browser cache. I will clear your form cache so that your forms will be refreshed from our servers.