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.
PayPal Express Error: Security header is not valid.Asked by INMB on February 09, 2015 at 10:08 PM
When people click on PayPal express button they get an error message.
Pay Pal Express Error
an error has occurred contact form administrator
security header is not valid.
What does this mean and how do I fix it?
I'm sorry for the trouble caused to you.
I did test your form and I am unable to replicate the issue you are having. I was able to submit your form successfully without any error message. Please check the screenshot below:
Have you embedded this form in your web page where you are having this issue? Please share the web page URL and we will take a look.
We will wait for your response.