I relied on this feature until the Time Warner app was made inoperable by Spectrum.
Unfortunately, this feature is not currently available on the My Spectrum app. We will forward your feedback for consideration on future updates.
So the new app took away a feature...bummer.
I too found the home phone notifications useful and am sorry that it isn't there now. There are other forum postings asking about this now missing feature too.
Add my "feedback for consideration on future updates" as well. Please bring the notifications back!