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 was able to reproduce the issue on the test PHP page http://www.jotform.com/show-post-data
but only the test page is not working. It is still functioning properly if you setup your own Post PHP page.
If you test my demo jotform http://www.jotformpro.com/form/31845261280956 , you will see in the resulting post page the data being sent as intended.
Can you share to us the form and your send post php code.. perhaps the issue is on the PHP code only.
The show post data page is working as expected.
If you visit the page manually you will see the 'No Post Data' message but if you follow the instructions here http://jotform.com/show-post-data you will see the submitted form data:
If you are sending data to your own custom page, please remember to set the 'Send Post Data' option to 'yes' in your form configuration settings.