Prosites Paypal Error

HI, Prosites Paypal displays this error

There was a problem setting up the paypal payment:

“Security header is not valid”

Please try again.

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  • Kasia Swiderska
    • Support nomad

    Hello Steven,

    That error message would typically only show when the credentials (Paypal API ID, API Password and API signature) are incorrect. Could you please double check that there’s no extra space characters in the credentials and that you’re using the credentials for the correct mode you’re using (Live vs. Sandbox – you cant use live credentials in sandbox mode)?

    kind regards,


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