I get an error in Paypal Express form

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    Asked on March 15, 2017 at 08:17 AM

    Hi, I can't be able to set up payments via PayPal Express. I get this error

    [PayPal Express Error]

    -An error has occurred. Please contact form administrator for assistance.

    [Transaction refused because of an invalid argument. See additional error messages for details.]


    Username API, Password API and API signature are correct. 

    I don't find where is my error.

    Thank you for your help

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    Answered on March 15, 2017 at 09:26 AM


    My mistake to check digital good.