Workfront Fusion: Unable to Connect to Workfront Proof (Request Timeout Error)

[YuvarajR]

Hi all, working on making a connection between Workfront Core (Sandbox instance) and Workfront Proof. I'm trying to set up the connection module in Fusion, but I'm consistently getting a Request Timeout error when I attempt to authenticate.

I've double-checked the credentials and endpoints, and everything seems to be configured correctly from my end. I've attached a screenshot for reference in case it helps identify the issue.

Has anyone run into this before or can point me in the right direction? Not finding much in the community on this exact error. Appreciate any help!
I followed this documentation to make the connection:
👉 https://experienceleague.adobe.com/en/docs/workfront-fusion/using/references/apps-and-their-modules/...

[Jeremy_Berquest]

Having the same issue, did you come up with a solution? I'm a little mystified by the connection credentials as we use SSO to authenticate our WF instance in Fusion.