Video Doorbell Pro 2 Device Health Re: Transformer Voltage

Just installed the Ring Video Doorbell Pro 2 by wiring to my existing doorbell and connecting the supplied Pro Power Kit to the existing chime. Everything went smoothly and the doorbell worked just fine. However, when checking the Device Health afterward, it states, in red, "15V" under "Transformer Voltage, which means "Your doorbell transformer doesn't supply enough power." At the same time, under "Power Output" in the next line, it states Level 1, which indicates, "Your doorbell transformer is strong. It's well equipped to power your Doorbell and should support any new features in the future." So, which contradictory message is correct? My existing doorbell chime is Broan Model 976 with 16V. Is this something I should be concerned with?