Distorted sound on Ring doorbell

My doorbell sound is so distorted that the person at the door cannot understand what I am saying, so device is pretty much unusable. It used to work and still now the first few words I speak are clear, but after that is indecipherable!
Have always been borderline with wi-fi signal even though doorbell, router and booster are literally within 3 metres of each other. Not sure if this is still the problem?

Hi @user292891. If you are experiencing poor audio quality from your Doorbell, try the following steps:

We also have this Help Center article here with other steps to try. If you have tried these steps and are still having the same concern, give our support team a call at one of the numbers available here for further assistance. If you are outside of the US, please visit here to see how to contact support.