I can no longer see my friends playing Candy Crush Soda and Candy Crush, what has happened?

Cj-5

I have checked all my game settings nothing was changed by me. I don't see any avatars of friends and when I click on show friends, nothing happens.

Tune_D

I´d double check the Facebook settings for both games and clear cache.

Do a restart and try again using Google Chrome as a browser.