I have only seen someone with Garmin post a couple of times. I have however see someone else post updates like TheSpeedofTim did. So if you don't want a FB account you should be ok.
I had trouble for much of the day syncing my Vivofit. I finally got it to sync at about 9 PM EST but my workout activities (I use an HRM) haven't showed up on Strava or Endomondo since 10/31. They are showing up on MyFitnessPal however. It's a bit of a chore to put everything in manually so I hope things get fixed up.
I did a quick test trying to record something new on my 910XT, and it worked. However it still won't upload the trail marathon I ran on Saturday, and was unable to upload on Sunday. I can see it in my watches history, but it won't go up to Garmin Connect.
My ride today uploaded to Garmin Connect via the mobile app, and auto-synced to Strava; but it didn't auto-sync to Training Peaks, so it looks like there are still some issues.
Same with me. My Ride on November 2 did not upload to GC and still will not sink to GC. I'm using an Edge 810(V3.20), iPhone 6 (GC APP V2.7.1)on a Mac. (Yosemite)
I am still having issues uploading any activities from my 910XT, Vivofit, and FR60. Haven't been able to upload any activities since the end of September. All devices worked well prior to that.