Infusionsoft App Error: "Cannot retrieve user details. Contact Admins."

I am getting an error when I try to add an Infusionsoft App to the form. "Cannot retrieve user details. Contact Admins."

Please sure that you are using the correct "App Name" and I would suggest that you check to ensure that the API is correct also. After confirming this, clear your browser cache and I would recommend re-integrating the form with Infusionsoft..

This guide might be useful:
http://ug.infusionsoft.com/article/AA-00442/0/How-do-I-enable-the-Infusionsoft-API-and-generate-an-API-Key.html#

Please give this a try and let us know the outcome. We will await your response.

Cheers!