Video Doorbell Pro 2 mechanical doorbell just stopped working

I purchased and installed a Ring Video Doorbell Pro 2, a few months ago. The reason I went with this one was that I wanted to use my existing chime in the house (I don't have enough outlets as it is and don't want to have to plug in a chime and unplug something else.) I just noticed this morning that the doorbell in my house is no longer working. I have checked the voltage in "device health" in the app - and it shows as 17V and "good". I get a notification that "someone is at my door" but the chime inside the house will no longer work. This is extremely unsatisfactory. Why is this happening? How do I get this corrected - is the doorbell now defective??? If so how do I get a new one?