Ring 2 and mechanical chime

Hi all, I have just installed my Ring 2. I checked my existing Mech Chime and it is in the list of compatible devices. it is a Legrand 41243. The ring 2 is installed and all working with the app nicely. My issue is that the ring 2 is not ringing the mechanical chime, yet its supported. The Chime has a built in transformer - 230V-14V-55o/B Is this transformer too under power? Any assistance is greatly appreciated. Regards