Critical Alerts:
If you received a critical alert notification but did not hear a sound
Check that your phone is not silenced or in do not disturb mode.
Verify that your Override Silent Mode in the app settings is turned on
Advisory Alerts:
If you do not hear a sound for an advisory alert you can check the advisory alert sound setting in your app to make sure is not turned off. Also check that your phone is not silenced or in do not disturb mode.