The Fitbit app may experience several issues that can affect its functionality. Here are some of the most common problems and their potential solutions:

• App and service issues: If your Fitbit device fails to sync with your app, Fitbit might be facing a service outage. You can check if this is the case by visiting Fitbits Support Twitter page or website status sites like Downdetector.

• Syncing issues: Fitbit trackers sync with Android devices via Bluetooth, which can be unreliable. If you have trouble syncing data from your Fitbit to your Android device, your solution may lie in your Fitbit apps Settings menu.

• Cache issues: Clearing the cache for the app by going into the settings and then into the apps may help if the Fitbit app is not working properly.

• Third-party app problems: The Fitbit Sense 2 and Versa 4 do not support third-party apps. You wont see any option to download these on the Fitbit Gallery if you own one of these devices.

If none of these solutions work, you may need to restart your tracker or try syncing with another mobile device or computer. Additionally, you can check the Fitbit outage and reported problems map on Downdetector to see if there are any widespread issues affecting the app.