My iPhone 6 Garmin Connect updated to 3.0 through the App Store and only shows Cycling, Running & Swimming available in the Snapshots. There's no Sleep or My day starts. See the attached photo.
Fixed by Unpairing Device (Fenix 3) and pairing it again.
I'd paired my Fenix 3 before when I had to pair it again the first time I used Connect 3.0 after the update so took a 2nd attempt to find pairing to fix it.
The below image shows the available Snapshots after re-pairing it.