Invalid Access Token for Adobesign

[Murderbot]

When using the power automate action 'Get a list of all library templates' we get an error with this in the body:

"code": "INVALID_ACCESS_TOKEN",
"message": "Access token provided is invalid or has expired"

and this in the headers:

"Pragma": "no-cache",
"X-Robots-Tag": "none",
"x-request-id": "a7331029-f47a-4307-b0ec-28462486baa5",
"Strict-Transport-Security": "max-age=31536000;",
"X-XSS-Protection": "1; mode=block",
"X-Content-Type-Options": "nosniff",
"Timing-Allow-Origin": "*",
"x-ms-apihub-cached-response": "false",
"Cache-Control": "no-store, must-revalidate, no-cache",
"Date": "Tue, 05 Oct 2021 21:36:49 GMT",
"P3P": "CP=\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\"",
"Content-Length": "103",
"Content-Type": "application/json",
"Expires": "0"

With the status code of 401.

I have tried creating a new connection in power automate and refreshing the existing connection but neither seem to work.

I've also contacted AdobeSign, so we'll see if there's an issue with our licensing...

Any advice or thoughts?