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 am not sure if I have understood your question correctly.
Do you mean to say the you are getting page not found error when you are trying to upgrade your account? I just tried clicked on the "Upgrade" button to upgrade my own account and I was unable to replicate the issue you are having. I would suggest you to please explain your problem a bit more in detail. It would be great if you could also share a screenshot of the problem and we will take a look. The following guide should help you in uploading image in your forum post: http://www.jotform.com/answers/277033
We will wait for your response.