Does HRM-Pro-Plus really track more than running?

I’m new to this HR chest monitor and I specifically got it because it claims to track more than runnings, also cardio and HIIT for example. Though, mine isn’t connecting at all when I do HIITs - it doesn’t prompt “Connect HRM” as it does when I do a run. It also claims that, it will track whether I’m wearing my watch or not. It turned out it didn’t. Anyone can help explaining what I am missing here?

I’m new to this HR chest monitor and I specifically got it because it claims to track more than runnings, also cardio and HIIT for example. Though, mine isn’t connecting at all when I do HIITs - it doesn’t prompt “Connect HRM” as it does when I do a run. It also claims that, it will track whether I’m wearing my watch or not. It turned out it didn’t. Anyone can help explaining what I am missing here?