Docusign verification from NodeJS app

Hello, 

I had a docusign working application in development environment where I was calling apis from nodejs application. I created a JWT key using the call back by going here : 

https://account-d.docusign.com/oauth/auth?response_type=code&scope=signature&client_id={iKey}&redirect_uri={callback}

I used integration key and user id as shown on my screen. 

This setup was working fine. 

Then I moved to a new setup by just promoting the application to production. For this I had to add a new member to my account as they have administrative rights to my account. Once I did that, I am not able to make any requests. I even updated the docusign links in my app as follows: 

DOCUSIGN_AUTH_SERVER="account.docusign.com"

DOCUSIGN_BASE_PATH="https://na3.docusign.net"

I also updated the JWT by hitting account.docusign.com instead of account-d.docusign.com in the above but I am still getting error of: 

DocuSign error data: {
  error: 'invalid_grant',
  error_description: 'no_valid_keys_or_signatures'
}

I am not sure where it is breaking. I see the integration key and user key is same. I even created new RSA key but still it doesnt work.