App crashes when switching to kid view

[Tiggerburg]

I just got my kids the Ace 3. We are trying to set it up, but every time I go into child view, the app crashes and logs me out. I’m using IOS with app version 3.39.2

Moderator edit: subject for clarity 

[LiliyaFitbit]

Welcome to the Fitbit Community, @Tiggerburg.

Thanks for the details shared in your post. I appreciate your efforts and recommend trying the following:

1. Log out from the Fitbit app.
2. Force quit the Fitbit app.
3. Reboot your phone.
4. Open the Fitbit app and log back in to your account.
5. Try to switch to kid view and set up the trackers. You can confirm the steps at How do I set up Ace for my child?

Hope this helps!