Venq sq Missing sleep and stress stats on app after 3.7 update? Any clues? Restarted watch, disconnected / reconnected phone blue tooth, reinstalled app?? No difference

Did you try a reset (vs a power down) by holding down the A button for 15 seconds (past any assistance notifications) until it shuts off?  

If that doesn’t work I’d contact support.garmin.com and start a chat with them.