Thank you to everyone who answered here. There were several occasions that FB links were used and could not be opened by me or other non FB members. I know of a few occasions where they were asked to post so we could see and refused. I personally find that rude. If you can';t post for all to see don't post any and send via email what you want a specific person to see.
Now I see there are many options on the FB user side to fix this but none on the viewer side. Hopefully everyone will be more conciderate of us non FB users. Thank you all.