Sell Online Easily with PayPal & WordPress › Forums › WP Express Checkout Plugin Forum › Invalid or Missing API Credentials! › Reply To: Invalid or Missing API Credentials!
January 10, 2023 at 12:03 am #1023
We have updated the following documentation for getting the Client ID and Secret keys. Can you please go through it one more time and enter the new API credentials for both live and sandbox and then save it: