Buzzing sound and camera doorbell v2 off

Three weeks ago, I set up my second-generation camera doorbell. Initially, the chime wasn’t ringing properly. After consulting online forums, I replaced the doorbell transformer with a 16v 24 VA one, and both the chime and doorbell worked flawlessly. However, yesterday, the camera stopped functioning, and the chime started buzzing. To stop the buzzing, I disconnected the cable from the transformer. Any thoughts on what might be causing this issue?