Notification management on the Roam 3 is terrible. I own a smartwatch that I don’t use during cycling workouts; I turn off notifications in the smartwatch app [zepp], yet I still don’t see the notifications on the Roam 3.
When I do read them, I’ve discovered that duplicate notifications get cut off by the Roam software/firmware.
Try this out: have three identical WhatsApp messages sent to the Roam and see what happens.