One Route to Resolve Adobe Sign Error - "You do not have access to this service"

Saw some other threads allude to similar issues other people faced with this error and want to confirm how to resolve the issue if the following is true:

      1. You have an active Adobe Acrobat DC subscription and

       2. you changed your User ID on your Adobe account at some point in the past

When trying to use the Fill & Sign tool from Acrobat Acrobat DC, I could not get past the point in the process where the service uploads the document. It would be after I would enter a recipient's email address and move to the step to Specify where to Sign. Instead I would receive  "You do not have access to this service. Please contact your IT Administrator to gain access."

Further, trying to use the FIll & Sign tool from Adobe Document Cloud I would get an error saying the link could not be created.

Contacting the Adobe Sign Support team was the most helpful action to take and below was the information they provided. Once they had made the updates on their end, it was a straightforward process to login and perform the steps to enable my access to Adobe Sign.