Pro 2 replaced old Ring. Doorbell chime will not work

Hello, My house was built 5 years ago and the Ring Door bell was install when the house was built. It is hardwired to the indoor chime. It started having issues and I have decided to replace it with a Pro 2. The original Rind did not have a power adapter in the door chime. I have replaced the old Ring with the new Pro 2 and installed the power adapter in the door chime as per the instructions. The Ring Pro 2 works. It has been synced to my phone, when you press the button, it rings by phone but it will not ring the inside chime. I removed the power adapter and it rings but the chime hums. Not sure what to do. Marc