Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hey there @Pamschwartz4043, welcome to the Community!
If you received a replacement and want to set it up, you just need to do the following from your Fitbit app:
- From the Fitbit app dashboard, tap or click the Account icon.
- Tap Set Up a Device.
- Choose your device and follow the on-screen instructions to continue.
Let me know the outcome. 
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Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
You are welcome @Pamschwartz4043, if you need anything else, do not hesitate in posting it.
Happy stepping! 
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