Lately I've been receiving emails from customers saying they've been receiving the 2 errors listed
"error from gateway: you do not have permissions to make this api call"
and
"This transaction cannot be processed due to an invalid merchant configuration."
What do these mean exactly? i changed to paypal express check out option and that fixed it apparently but im just curious why that happened in the first place so i can prevent it from happening again. Thanks for the help guys