Well @Davycaf11 seeing that the time was off tells me that it has been a couple of days or more since the Blaze had synced with your Fitbit account. To fix this the user would open the Fitbit app and let the tracker sync.
You say that you needed to resync, I'm not sure what you mean since you don't mention that the tracker ever sync to resync. Do you mean that you did the add device and setup the Blaze to your account. If you did then the setup process cleared the data, that did not sync, from your Blaze.