Doorbell Pro Won’t Reconnect

I have tried to reconnect/reinstall my 2 year old Doorbell Pro (front door)and I keep getting a message that it wants to join WiFi “Ring-abc123” and then unable to join network. This network does not show in my WiFi settings. I do get the spinning white circle when I press the reset button. Also tried rebooting my modem. My back door Doorbell Pro continues to work perfectly. What else can I do?