Chime Pro 2 is connected to WiFi and linked but it’s not ringing

Hi - I’ve got a Ring Doorbell 3 (battery) and have now connected a Ring Chime Pro (Gen 2) - set up of Chime is complete, the blue light is solid, it’s linked in the Ring App to my doorbell, the volume of my Chime is set to high, WiFi is connected, tested sound of Chime from the App - all good ........ but the Chime Pro is not ringing when I press the doorbell. I’ve reset Chime Pro ......still nothing. I’ve checked the notifications tab in my iPhone and reset my phone....still nothing. Help please!