Device sharing #2

I want my wife to be able to view every feature of our ring video doorbell that is available to me inthe app on her phone.I have created a “Ring” account for her. On my app I have sent her an invitation as a shared user. She accepts and is asked to input a verification code. Annoyingly this code has to be generated by me. When she enters this code she is told it is invalid or expired. After multiple trials she (we) have got to the point where she has to add a device! What I expected was that she would immediately see what I see when I open the Ring App on her app. Does she really have to go through all the business of scanning the doorbell’s QR code (which will involve taking the device off the wall!) or have I done something wrong? This rigmarole is a real pain!