Digial chimes no longer working

I have two Ring video doorbells connect to Nutone LA600WH. Both were working correctly up to about 2 weeks ago. One of the doorbells is currently has a delayed ring (30 seconds or longer) or no ring at all. I’ve reset both door bells, and this has not improved the situation. Has there been update?

Hi @wzit2u. What specific doorbell model do you have? This will help us diagnose your concern. Also, what is the voltage rating of your doorbell transformer? Thanks, neighbor.