Inspire 3 missing data from one day

[Merctallica]

Last Sunday, I didn't realize that my Fitbit app on my iPhone had stopped synching with my Inspire 3 tracker in the late afternoon. Unfortunately, during the time it was down I logged an extra 19,000 steps and over 200 zone minutes, a rather considerable output for me that affects my weekly and monthly totals. I have followed all of the suggestions - uninstall/install; reset the tracker; sign out and back in; turn off Bluetooth and my phone - but those 12 hours or so are still just gone. My tracker still has the information - it notified me that I had hit over 300 zone minutes for the week last night - but I do not know how to restore that data to the app. Any suggestions?

Moderator edit: clarified subject.

[ManuFitbit]

Hi @Merctallica. A warm welcome to the community. 

I appreciate you taking the time to comment on every detail about this issue with your Inspire 3.

Concerning the situation with your device. Should you encounter any difficulties with synchronization, I suggest referring to the following help article:

Why won't my Fitbit device sync?

In addition, you can manually log a walk in the app to make sure those 19,000 steps are counted. Here’s how you can do it:

• Go to the Today Tab > Plus icon > Activity > Walk > Now edit the information. 
• Set the start time, duration and date. 

Could you please let me know if you are currently using MobileTrack? This feature allows your phone to track your steps directly if you aren't wearing your Fitbit, which might be why those extra steps are appearing.

If you’d prefer to disable this, you can easily 'unpair' MobileTrack from your account. Simply tap the device icon in the upper left corner of the Fitbit app, select your phone, and then choose 'Disconnect device.' This will ensure only your Fitbit tracker is recording your data.

[Merctallica]

Thank you for your response. Unfortunately, no matter what activity - or duration - I manually enter for last Sunday, I can not come close to replicating the 19,000 missing steps or any additional zone minutes (the closest I got was a "12 hour walk" that only netted me 5,000 steps!). It remains stuck on 8,709 steps, 1 zone minute (I earned over 200), and 3,043 calories - pretty much what I had posted until about 5 PM that afternoon, when the synching stopped. My app also keeps telling me I only have a two-day steps streak, even though it is now over 40, which means that it not only missed key information for 12 hours or so earlier this week, but it's actively glitching now. (I am not using Mobile Track, either.) I take my numbers and data seriously, so losing a substantial chunk of data is very frustrating.