Express Checkout Error: PayerID is missing
I am using PayPal Express Checkout. And although the user is able to add items to the Cart Go to PayPal, Pay, and return to my site to process the payment, The Transaction Fails.
I followed the instruction to debug eCart Transaction Failure issues, and I get this error message:
Express Checkout PayerID is missing
Could you please tell me how to fix this?
Thanks