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LoxyBBAsked on May 25, 2020 at 11:18 AM
Error message "security header is not valid" appears once submit button is pressed.
Can you please tell me how to fix?
Page URL: https://creativemillbb.com/membership/ -
David JotForm Support ManagerReplied on May 25, 2020 at 11:40 AM
Thank you for contacting us. That error usually means that the credentials that have been set up in the PayPal Pro field are incorrect.
Please contact PayPal support in order to double check if those are the correct credentials of your PayPal Pro account.