Charge 5 not synching, behaving slowing, not responding to resets

[polandmp]

My Charge 5 has been behaving oddly.  For the past few months it has not been synching automatically.  I reset it, reconnected it to my phone, etc., and it never fixed the problem.  But by synching manually once, it would usually stay synched for most of the rest of the day.

For the past two days, however, things have not been working at all.  I cannot "see" the fitbit with my phone.  I tried re-adding it, and the phone connected to the tracker but could not add it -- I got a "not working?" screen.  The tracker itself is not behaving itself.  It has not "reset" itself for the new day -- my stats from the previous day have carried over, even though the date and time are accurate.  And the tracker is behaving slowly.  When I tap it to change stats or swipe to go to a new screen, it lags and doesn't transition smoothly.  I have restarted the tracker several times and also reset things.  It has not changed the tracker's behavior.  My phone's bluetooth is working (I confirmed that by connecting to other devices).  It feels as though something that has failed on the part of the tracker.  Has anyone experienced similar symptoms?

[DavideFitbit]

Welcome back to the Community forums, @polandmp. 

I appreciate all the information that you've shared about the difficulty you're experiencing with your Charge 5 and the troubleshooting steps that you already tried. 

Keep in mind that you need to sync through the Fitbit app and not through the Bluetooth settings on your phone. Before considering other options, I recommend that you try restarting the device again using the three pulse restart method described here below, instead of the restart procedure available on the settings app: 

1. Connect your device to the charging cable. For instructions, see How do I charge my Fitbit device?
2. Press the button located on the flat end of the charger 3 times (end of the USB cable), pausing for 1 second between presses. Then wait 10 seconds or until the Fitbit logo appears.

In addition to the restart, let me know if you already tried all the steps listed here to resolve syncing problems, and make sure to check the compatibility requirements listed here and to keep the Fitbit app updated to the latest version available. 

I'll be around.