Welcome to the Fitbit Community, @NadiaRoman.
I am sorry to hear your new Ace 2 is losing steps. Thanks for the details shared, I am here to help. I recommend restarting the tracker by following the steps from this help article: How do I restart my Fitbit device? Please also make sure the tracker is syncing. You can confirm the steps to sync it at How does my child sync Ace or Ace 2 with their device?
Let me know how it goes, I'll be around.
Want to discuss ways to increase your activity? Visit Get Moving in the Lifestyle Discussion Forum.
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