Cannot access existing chime to install jumper - Ring Wired 2021

Hi, I recently purchased a Ring Wired 2021. The directions say to install a jumper in the existing chime. I see the existing chime but can't for the life of me figure out how to access or open it. Is this okay? are there any safety risks / concerns in not installing the jumper? I went ahead and finished installation without the jumper and it seems to work just fine for now.