Nest doorbell doesn’t always sound inside

[Beachgirl]

Doorbell worked fine for several weeks then it started ringing inside the house only sporadically. It still would ring outside though. 

[MplsCustomer]

@Beachgirl 

Is your doorbell securely connected to your doorbell chime and transformer? Does your doorbell transformer meet Google Nest's requirements (see below)?

https://support.google.com/googlenest/answer/9247132