Camera and motion detection stopped working in Ring Pro 2

My Ring Doorbell Pro 2 wired has only partly worked for the last few weeks - before then it was fine. The doorbell works and is connected to the wifi, but the camera no longer connects, nor does the microphone/speaker on the doorbell. When someone rings the doorbell, we get the ring on our phones, our Echo Show and our two Ring Chimes.I’ve tried a factory reset, and switching to and from the extender on one of the Ring Chimes, but nothing has helped.Any ideas anyone?