The community member is experiencing an "unauthorised" issue when trying to connect. Another community member suggests that the issue may be related to API keys and access, and recommends checking the authorization and ensuring the key has access to the data. Additionally, the community member suggests that providing some screenshots may help troubleshoot the issue.
I haven't used datocms before but something is likely up with api keys and access. I'd make sure you are passing in some authorization and that the key has acccess to the data