You do not have permissions to make this API call

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1

When I want to use Paypal, I get this message.

  • You do not have permissions to make this API call

On the guest view of the invoice

guest/view/invoice/rnMYMcavXWQkUXX

What did I wrong, Is it my paypal account?

2

Did you set up the merchant account as stated in the wiki?

3

I have now,

But now I get the message

Security header is not valid

4

Please see Error: Security header is not valid