Hi,
I have a Vivosmart 3 and sync using Garmin Express. Steps history is not showing up in the portal unless I sync it within the day. Yesterday I walked over 12000 steps but because I synced it after midnight Garmin Connect doesn't show any steps for that day. This has happened multiple times the past few weeks. Previously I used to be able to sync on Friday and all of my steps for Mon-Fri would show up in the portal. I tried manually uploading the *.fit files to the portal but it says "This file has already been uploaded."