Fitbit

We haven't received many problem reports for Fitbit yet.
If Fitbit is down for you, you might be one of the first to encounter an outage - please consider checking back later. It's also possible that the issue is local or related to your internal network or system.

Fitbit reports

Fitbit offers a fitness platform. When Fitbit is down, users may be unable to upload and view new activities, login isn't working or they get general error messages such as server connection error.

Reports about problems with Fitbit

Having issues with calorie counter and sleep part of the app! What is going on ?
Problem with syncing with device and (at least temporarily) communicating with third-party apps.
Its back up
The app went down again like it did about 4 weeks ago.un-installed, reinstalled not log in fails. I noticed the app wasnt syncing. Anyone else?
Not syncing again. Fitbit Labs notifications are extremely annoying too. On hold now with a Google tech. She says they are having significant syncing issues across the board. Fitbit Labs seems to be causing issues to multiple users as well. Opting out of any and all Fitbit products test in the future. That's if I don't buy a Garmin. I'm over Fitbit since Google took over. Which is funny, because eI tend to prefer Google products.
Third Day in a row I started my day not being able to sync. I've done all the troubleshooting. Even reset my home Wi-fi and tried using mobile data to sync. It's now 12:53pm alaska time & usually by now it's displaying my data.
app is back up, but notifications from phone will not show when i swipe over to that screen
I’ve been down all day! My app on my phone won’t sync. My watch says I need to login, but I can’t. My Bluetooth on my phone won’t connect to the watch finally connects but I can’t not tie the phone app with the device. It’s been a bad day overall. I have turned on and off multiple times. Pretty sure all my data is lost. All my device does now is tell me to download the Fitbit app! I’m so frustrated.
Try Garmin Venu. Accuracy on par with Apple Watch and better battery life.