Thanks Jimmy! What about the phone info?! Paul   Oh- just tried and and still doesn't work. If I change to street_address, I get this (400)- street_address is invalid. If I add the 'es' like before, street_addresses gives a valid response (201) with no data created just like before. Mind you, this is with the body taken directly from your documentation and using your engine to make the POST request. Mind blowing. My own code fails also. Any help is appreciated as my client is waiting. Thank you. Paul ... View more

Jimmy thank you so much for your quick response. My problem happens actually after successfully getting the access token. In particular, sending a POST request to .../contacts/sign_up_form. The contact is created or updated, but the address information is never included. Even when I copy the exact JSON contact information directly from your API docs [Example POST Create or Update Contact Request, PHP (and changed the list number)] and then use it in your API Reference engine, the contact is created in my list, but the address info is nowhere to be found. Is there a way you can help me debug this issue? I would so appreciate your help on this. Thank you. Paul ... View more