I can't load Facebook Messenger for the last 2 weeks; I had no difficulty before that. Facebook itself is no problem, except loading slowly (not new). I wonder if the security settings that prevent others from accessing my personal information have something to do with this? I have a Mac Mini with OS 10.10 and am using Firefox 78.15.0esr (64 bit). What do I have to do to load Messenger? It is my main contact with the world since I retired. Thank you!