That typically happens if you’re trying to use Express Checkout with a personal PayPal account. In order to use Express Checkout you need to upgrade to a business account.
Business accounts are still free unless you go with Payments Pro, which would then cost $30/mo. You do need to have a business account setup to use it, though.
Thanks very much for your great plugin.
I also received this emailed message:
DoEExpressCheckoutPayment API call failed
Error Code: 10002
Error severity code: error
Short Error message: Authentication/authorization Failed
Detailed Error Message: You do not have permissions to make this API call
Express Checkout is NoTenabled in the PayPal settings.
Order details show an order being processed via PayPal Express for 0 dollars and no shipping address.
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Thanks so much for your time.
@webflight, as I mentioned in the previous answer, this typically only happens if the account is a personal account. Have you already verified that is not the case here?