'Project Overview' from Atlas no longer showing on Epic Layout and not syncing

After the transition from 'Atlas' to Platform Experiences, I no longer see the "Project Overview" on the Epic issue layout (it is missing completely) in Jira and am unable to sync my Atlas project to Jira. I used the Project overview on the Epic to create an Atlas project directly from my Jira issue and then enabled sync, but am no longer able to do this.

I did try to create a new Project in Atlas using the "Link existing work" field and get the following error: