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.

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    PayPal: Security header is not valid error

    Asked by bartbijen on July 23, 2015 at 04:18 PM

    I have finished my jotform, embeded in my website. Now once I fill in the complete form and click send form and want to head to paypal an error message pops up:



    to access the website under construction pls use the following login date:


    login: caminhos

    pass: brazil

    Page URL:

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    JotForm Support

    Answered by Mike_G on July 23, 2015 at 07:06 PM

    I would like to apologize of the inconvenience. This issue happens when the information entered in PayPal API settings has issues. 

    Are you putting the information by copying it from a source (like Notepad) and pasting it to the PayPal API settings fields? Sometimes, when you copy a text/word from a source it includes a " " (space) without you noticing it.

    I would recommend you try to enter the information manually and see if it works this time. 

    Let us know if it works or not. Please feel free to get back to us anytime, should you be needing any further help. Thank you.