Doorbell not connecting to wi-fi

I installed a 2nd gen ring doorbell about a month ago. It worked fine up until about 4 days ago, when it quit connecting to my home wi-fi network. I called support and they walked me through how to reconnect the doorbell to the network, but it didn’t work. The support rep shipped me a new doorbell. Now the new doorbell won’t connect. I have not made any changes to my wi-fi. What is going on here?