Stymied by 5 digit PIN to change wifi network

Hello, Have had a RING Video doorbell since 2021.  It works fine but the wifi connection RSSI=62 is OK.  we recently bought a wifi range extender and I am trying to change the connection between the doorbell and the router to the doorbell and range extender.   When I use the App to change the wifi network I get to the step where the App and device connect and I get the spinning white circle.  When I click next in the App I am prompted to enter a 5 digit PIN from underneath a QR CODE.  I can’t find the QR code/PIN.  How do I proceed?