What is likely not working if the Facebook connection is not successful?

The option indicating that the cloud services need to be published is likely not the most relevant reason for an unsuccessful Facebook connection because the integration with Facebook typically relies on correctly configured authentication and permissions rather than the publication status of cloud services. While publishing cloud services is an essential aspect of ensuring that they're accessible for use, if the Facebook connection is not working, it usually points to issues related to configurations, tokens, or server settings that directly impact the connection with Facebook.

On the other hand, if the authentication tokens are invalid or have expired, that would directly prevent a successful connection. Similarly, adjustments to the OSGi Facebook configuration and verification of server settings for API integration are crucial steps that ensure the connection is properly established and maintained. These elements directly influence the way the integration operates and communicate with Facebook's services. Therefore, troubleshooting those areas is more likely to reveal the root cause of the issue.