Doorbell 2 added transformer now not ringing

Hi, Hoping someone can advise here. I have had a doorbell 2 for about 6 months and it has been working fine. Recently I wired in a transformer (20v AC). The doorbell now says it's hardwired and it is charging the batter fine. However when someone presses the doorbell it reacts exactly as it did before (blue ring swirls, makes the noise), but the linked chime doesnt ring, and no video ger recorded (No event is logged in the app). It is still detecting and recording motion most of the time, just not for the button press. I also cant seem to do liveview any more either.I have tried:1) removing and re-adding the chime - No change2) Turning off the transformer - No Change, still says it's hardwired3) Removing and readding the doorbell to my account - No ChangeI am not sure what I can do to resolve this issue?Thanks for any help anyone may be able to provide.Jamie