Hi there,   I have followed the same procedure but getting error as unable to process the feed because API could not be initialized in gravity forms.   I created a new application and added its key and secret, and processed, but it gives the following error 400 - Unknown or invalid client_id. I understand that I am using a third-party plugin. But when I copied and created the application, it was working properly. The information I wanted to feed in constant contact, was going properly. After regenerating the secret, I am not able to initialize the API. Do you have any idea? Kindly provide some solutions. ... View more