My voltage dropped to 3898 yesterday and then briefly jumped to 4005. It’s down to 3995 today. The Doorbell Pro stayed on. I think using the bypass on the Pro Power Kit V2 helped. Thankfully, I have the Chime Pro since my existing doorbell is now bypassed. I wish I knew why this cycle occurs. I can’t seem to get any explanation for it from Ring. Some surmise it has to do with the internal battery in the Ring Pro, but who knows.