Nest Hello Has Power but Doesn't (Often) Ring Indoor Chime?

I recently installed a Nest Hello doorbell and have run into an issue where the interior chime almost never rings. I say almost because exactly once in all my testing did it ring on the interior.

I wired it according to the instructions for my doorbell and have checked the voltage from the transformer (16.4V AC).

Here are some pictures of the wiring:

Initial Wiring Before Installation:

Wiring After Installation:

Location of the Camera Relative to the Chime Box:

The Doorbell Has Enough Power:

What exactly is causing the issue? Why did it ring once but not any more? Is 16.4V too close to the 16V minimum? Changing the settings from physical to electronic doorbell in the app didn’t change anything, and adjusting the duration higher didn’t do the trick either.

I also moved everything as far away from the chimebox as I could do prevent them from dampening the vibrations (Assuming there were any), but this didn’t help.

There was something else that was strange, the voltage measurement for both the AC voltage and Battery voltage were both 0V in the app under “technical info”:

The unusual thing is that it most certainly has power from the doorbell AC wires. I can verify this by opening the breaker. When this happens, the Nest Hello shuts off and no longer recognizes me when I approach it’s FOV.

The internal battery may be dead, I have no idea and didn’t charge it when I got it. I assumed that it charges by the AC current.

How can I make the chimebox ring when someone presses the doorbell?