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Hello @BrianRCullinane
There might be a surge of users using the systems server as part of thier new year resolution.
Try to "forget your device" from your phone Bluetooth connection and then reconnect.
Dont worry, no data will be lost.
Forget your device video
https://www.imore.com/how-to-fix-bluetooth-iphone-ipad
Syncing
https://help.fitbit.com/articles/en_US/Help_article/1866/?l=en_US&fs=RelatedArticle
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Hello @BrianRCullinane, have a warm welcome to eh Fitbit Community, it's great to see new faces around. Thanks for your insight @ACG, it's very helpful and I appreciate it! 
@BrianRCullinane, as @ACG mentioned, it's possible the servers have been overloaded because of many people trying to set up their devices. However, if you're still having trouble syncing your tracker I would like to suggest you to check the link posted by @ACG that has been proven to be very helpful for many members facing the same situation.
If after checking and trying the troubleshooting steps on that site your tracker is still not syncing correctly, please reply to me so I can help you further. Additionally if you need anything else, please don't hesitate to reply as well.
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