08-05-2016 06:27
08-05-2016 06:27
08-05-2016 07:07
08-05-2016 07:07
08-27-2016 09:09
08-27-2016 09:09
Hello, @Driscoll15, @pegmumford! Thanks for joining in. Are you both still unable to join Challenges? This problem should be currently resolved.
Have you tried force quitting and restarting the App? Also make sure that you have a good and strong Internet connection at the moment you are attempting to do this.
You can force close the App by: rapidly double tapping the iOS home button > swipe left until you see a preview of the Fitbit iOS App > and then swipe up on the preview to force close.
Keep me posted!