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Getting a PayPal Express to work without errorsAsked by Mastergardener1 on January 18, 2017 at 09:29 AM
I have place the Playpal Express as our payment source. I have deleted it's infomration and done it twice to insure I pasted the information asked correctly'
once I do a review and try to test the submission I get the following error message at the top of the screen each time
(PayPal Express Error)
an error has occured. Please contact form administrator for assistance
Security Header is not valid)
I don't see any issues with your configuration. Usually, the error is because of the extra spaces/characters in the API credentials but your keys are fine as far as I could see it.
Can you check your Paypal account if you have been approved for Express checkout payments? I would suggest reaching Paypal about this too. If you Paypal express is not yet activated, you can activate it here: https://www.paypal.com/US/webapps/mpp/express-checkout.
Please get back to us if you need further assistance.