Hey there,
I'm using a Fenix 5X, haven't had any issues with Garmin Connect not showing HR until a few days ago and now its just stopped. I am on the beta, it doesn't show a live feed of my HR during activites and I have to enter that days HR info to view resting etc instead of having it automatically displayed on my home screen.
Anyone else encountered this? I have disconnected my watch, reinstalled GC. Multiple times. Still no luck. Recently had open heart surgery and use this for pretty much everything so pretty irritated its just decided to stop working.