Docusign Connected System

i am not an expert in this,
but i looks to me that your selected docusign environment has a different URL then your instance URL. 
perhaps you finds some hints here: 
https://docs.appian.com/suite/help/22.2/docusign-connected-system.html

i am not an expert in this,
but i looks to me that your selected docusign environment has a different URL then your instance URL. 
perhaps you finds some hints here: 
https://docs.appian.com/suite/help/22.2/docusign-connected-system.html

Got the instance URL from here