My Ring rings, but the indoor Ring chime does not

They have worked well since we got them, but of late, the Ring itself chimes but the chime inside the house does not. It also no longer connects to our WiFi, which is working just fine on all our other devices, thank you very much. Is this planned obsolescence requiring us to upgrade to a newer model (ours is admittedly a bit of a dinosaur), or is there a rational explanation as to why the Ring and its chime are no longer communicating?