Was great but now chat heads don't work. Don't know what bubbles are as they don't work either on my S21. Just updating this 3/7/21 and dropping it to two stars. Can you please sort out the annoying habit of why it informs you you have a message on fb when you don't. The only way to solve it is to uninstall this app and then reinstall. Had to do this at least twice this week. Then you have to redo your personal settings for the app. So annoying!!!! 2022 and you still haven't sorted above!