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PayPal Pro: Security header is not validAsked by cesmeatlatur on January 25, 2016 at 06:09 AM
I would like to use Paypal Pro , but get thisSecurity errorSecurity header is not validCould you please help me about it what I have to do for use it .Thank You
Thank you for contacting us.
Have you solved the problem by updating your PayPal Account API details on the form?
My test PayPal submission was properly forwarded to the PayPal payment page.
If the issue still persists, please let us know.