PayPal Express payment displaying an error security header is invalid error

Hello my form address is below. 

 

The last 2 pages preview form & payment do not work as needed.

I need to be able to preview the info added on preview page.

I need to be able to pay on the payment page. 

Please advise.

 

https://form.jotform.com/62231426507146

Are you indicating that you where not able to see the payment information in the PREVIEW window. I have just tested your form and was able to view the entire form in the PREVIEW window.

If you are still having problems, please let us know. We will be glad to take another look.

 

I solved preview problem.
I can not submit form details I can not figure out why.
Having PayPal error can not figure out.
Please advise
Please pardon any spelling errors. This message was sent from my mobile
device.
...

I have just tested the form and did not have any problems submitting the form. Please make sure you do not have anything blocking popup windows.

 

Hello
I keep getting this error message. I can not reproduce your result I have
tried 2 different browsers. I also tried from both pages.
Please advise.
[image: Inline image 1]
[image: Inline image 2]
...

Unfortunately, I am not able to see the screenshots that you've attached. The screenshots attached to the email response cannot be posted to the forum thread.You must log in to JotForm while you are attaching the screenshots.

Please check the guide below for more information:

https://www.jotform.com/answers/414264-How-to-include-screenshot-image-in-the-support-forum

At that situation, we can assist more properly, we will wait for your response.

Please see screenshots
*https://drive.google.com/file/d/0B5dZ_MQu5Z7NRzZ5QzJsc21ab28/view?usp=sharing
*
https://drive.google.com/file/d/0B5dZ_MQu5Z7NckVHSEVKeU8yNWc/view?usp=sharing
Thank you
Please pardon any spelling errors. This message was sent from my mobile
device.
...

I have cloned your JotForm to my account and see that the form is redirecting to PayPal without any issues at my end. It looks like there is an issue with the payment field on your form. Please recheck the API keys on the payment field and if the issue still persists, please try removing the payment field and add it again. 

Let us know how it goes. We will be happy to assist you further. 

You stated you were able to complete payment from my form a couple days
ago. How is that if there is a PayPal issue?
Please pardon any spelling errors. This message was sent from my mobile
device.
...

Please pardon any spelling errors. This message was sent from my mobile
device.
...

Unfortunately, I am not able to reproduce the same issue that you’re having.

 

As my colleague was mentioned above the issue might be related to your API keys. could you re-check your API keys Please, check the guide below for more information:

http://alvinjiang.blogspot.com.tr/2011/05/prestashop-tips-paypal-module-security.html

 

If you have any question or issues, please do not hesitate contacting us. We will be glad to assist you.

I've created a separate thread for you, so anyone in the support staff will be able to assist you with your specific requirement. Please follow up there:

https://www.jotform.com/answers/908330

 

Just decided to go with basic PayPal
Thank you for your help
Please pardon any spelling errors. This message was sent from my mobile
device.
...

Thank you for your response. If you encountered any issues, feel free to contact us. We will be happy to assist you.