Same issue.
Rides on 06/11/17 and 06/10/17 synced OK but todays ride on 06/13/17 is not appearing in Strava.
Running Fitbit App version 2.44.1 on Andriod Motorola phone with Fit Bit Surge version 16.34.5.14
UPDATE: upgraded app to version 2.5, recorded a bike ride, sync with fitbit but still not showing in Strava
Also posted in another open post
I've managed to solved the strava sync issue for my account by revoking access to strava and connecting again. Today's ride now appeared in Strava
Don the following suggest from a previous post:
Best Answer