Ended up resetting the entire device which worked for another day before it went back to not working anymore. Phone > Smart Notifications > Status > On. And for the settings in the app I have enabled the apps under "smart notifications" that I want to show. I have a Oneplus 7 Pro device running Android 9 and both the phone and watch is running
The fēnix® device has a wrist-based heart rate monitor and is also compatible with chest heart rate monitors (sold separately). You can view heart rate data on the heart rate widget. If both wrist-based heart rate and chest heart rate data are available when you start an activity, your device uses the chest heart rate data. Wrist-based Heart RateIf both wrist-based heart rate and chest heart rate data are available, your device uses the chest heart rate data. From the heart rate widget, hold MENU. NOTE: You may need to add the widget to your widget loop ( Customizing the Widget Loop). Select Heart Rate Options > While Swimming > Off. Swimming.BotCEmq.