have same problem, suddenly notifications stopped on vivoactive 3 music while every possible setting is correct, i sometimes get the notification on my phone that those notifications indeed stopped working and that i have to restart my phone but when i do nothing is solved. i already did a hard recovery of the watch but nothing got solved. it is a mystery i would like to be solved. only having the watch for 2 weeks now.
I have the same issue Phone = One Plus 6T Android 9, Garmin connect ver.4,23,1. Notification Stop working,
I uninstalled Garmin connect, and reinstalled from Google shop, and then Notifications worked for ?? 1 Hour.
Problem is: Garmin Connect that should run in background must terminate ? the round Icon is not present in the Notification bar on the phone, and my Forrunner 235 say not connected on Blue Tooth. If I manually open Garmin Connect the watch reconncet and messages start working for a while.
Conclusion: Garmin Connect terminates unexpected .
I had the same problem. All my permissions was given to the connect app and notifications was enabled on my vivoactive 3.
It was solved when I went to battery settings on my Huawei P30 - App Launch - and switched the connect app to 'manage manually'. Also make sure that the connect app is allowed the run in the background. (settings - mobile network - data usage)
Now I receive all my notifications on my vivoactive 3 with no problems.... :)
Thx, was effective immediately.