Doorbell reset????

I installed the doorbell and got it working. I was in the middle of trying to signup for the service. The doorbell disconnected and will not re-aquire. I deleted the camera from the app and was going to reinstall. The doorbell shows Blue Ring but I can't see it on the phone... it does not detect the doorbell. How can I reset the doorbell so I can reinstall the doorbell camera? Thanks in advance.