I've got a Jira Work Management project and also spun up an Atlas environment to test. I created an Epic within the JWM project and tried to link it to a Goal in Atlas and also sync the status to a project in Atlas. Either way, when I try to link the Epic (or any Epic) to anything in Atlas, I get the error below:

If it's a permission issue, I'm not sure where it could be stemming from as I am an admin for both products and the site they are in. I've also attempted this after refreshing, waiting days, etc. Any insight would be greatly appreciated!