Since I updated to iOS 11, Garmin Connect Mobile no longer syncs with my Garmin Fenix 5S automatically via Bluetooth. I need to open the GC Connect App, and them manually click on the sync button (or do the same on my watch).
Same problem after update to iOS 11 (and the latest iOS 11.0.2), both Fenix 3 and Edge 1030 continue to have sync problems and often I have strange sync issues. Before, when I was using iOS 10.x everything was working well!
In my case my VivoActive pairs with my iPhone 6 just fine and updates the Connect Mobile app on my phone. My problem is that the phone doesn't sync with the Garmin Connect site to update my activities.
By the way, my PC doesn't recognize my VivoActive. when I attach it to the computer. It does "see" my Edge 705 just fine.
I have the same issues. Repairing worked for a while now impossible for devices to connect. Phone says watch is connected but can't sync.
I'm having the same problem. I've updated to IOS 11.0.2, updated the app, and my vivoactive HR. Removing the bluetooth connection didn't work either. The phone (iphone 7) finds the watch, but the app will not connect. It "has a problem pairing".