Hi there @purple72, Lovely to have you here in the Fitbit Community as a new member! The only occasions I have seen this unexpected behavior is when the tracker is not paired or was unpaired from your Dashboard for any reason.
So my recommendation is to review your tracker is actually paired to your account. This is easy to know as you should be able to see your tracker icon next to the account tab in the right upper corner of the main Dashboard.
If this is the case the solution is very simple. The following post will guide you through in case you have question about the process. Although you can address the issue by re-pairing your tracker with your existing account.
See you later and hope this helps.
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