My newly installed Ring Doorbell Pro 2 wasn't functioning properly due to low voltage and Ring sent me a new transformer (specific product here here). When I went to remove the doorbell chime from the wall I saw that the transformer wasn't located behind the chime. I believe I was able to track the wire to the circuit breaker and identify the existed doorbell transformer (see attached photo below).
I ended up not proceeding with the installation because (1) I wasn't 100% sure if what I had identified was the appropriate transformer and (2) the existing transformer only had 2 wires coming out of it while the new transformer had an additional ground wire.
I am seeking guidance on how to complete this installation. Specifically, I am looking for additional confidence that I identified the appropriate transformer to replace and I trying to understand how to account for the "extra" wire in the new transformer. I'm under the impression white would go to white and black would go to black I just don't know how I'd handle the green wire from the new transformer. I'd also like to know if electrical tape is required given the videos I've seen only use the wire caps.
I've looked into other threads I wasn't satisfied with the responses, so I decided to post an independent thread.