Ensure that your privacy settings allow you to receive messages or friend requests from people who can help you if they need to contact you.
Remember that the availability of these options might vary, and Facebook's support structure may have changed. It's essential to check Facebook's official help resources for the latest and most accurate information.

Instant Messenger: https://groups.google.com/g/microsoft.public.sharepoint.windowsservices/c/PDspzeA1wbM