Hi, In this page https://developer.paypal.com/docs/classic/express-checkout/in-context/enable_in_context_checkout/ There is a frangment how to setup Express Checkout In-Context paypal.checkout.setup('<Your-Merchant-ID> What exactly is the 'Your-Merchant-ID' and what it's used for Is it the email of the account or it's in this form "HH897YTE8HHDA"
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