First Alert CO/Smoke low battery notification missing

I think this is a secret 'feature' for any battery smoke/co. You have to sound low-battery chirps in the middle of the night...Anyway, one of the First Alert CO/Smoke batteries went low and started chirping . But I never got any type of notification by the Ring App or anything else about it.Still, going into the app details, it was showing low battary. Bug? Feature request?Thanks in advance.