Thanks I looked into my salesforce developer org and figured out my issue.
I have Salesforce developer org and I was connecting to esignlive sandbox(which is not good) and now I switched over to https://apps.esignlive.com/ and error=redirect_uri_mismatch&error_description=redirect_uri%20must%20match%20configuration is gone
Ah. Sorry. I am not a Salesforce expert by any stretch of the imagination. I assumed when you said developer org that that meant sandbox. I almost asked to clarify, but didn’t. My mistake. Glad you found it!