Connectors : 05 - "Where Used" app links on different workspaces
Verify that only those apps are shown as links under "Where Used" that are accessible to the user's permissions.
Apps that are on different workspaces than the user's role setup cannot be accessed. If the user has access to more workspaces, the links will only find those apps that are on the same workspace that the user is currently using; otherwise the link will take the user to a default "App not found" page.
You are logged in with a Workspace Owner or below and on the main Connectors page. Many connectors should be used in different apps and the same connector should be used in many apps.