Hello @Alibethel and welcome to the Community. I'm sorry, but Fitbit removed the challenges and adventures some time ago. Adding Premium won't help. With respect to seeing your friends, it depends whether you have a Fitbit account or have moved to a Google account. If you have a Fitbit account, you can only see your friends that have a Fitbit account. If you have a Google account, you can only see your friends that have a Google account.
Laurie | Maryland
Sense 2, Luxe, Aria 2 | iOS | Mac OS
Take a look at the Fitbit help site for further assistance and information.
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