Ring Video Doorbell 2nd Generation - New install- BURNING SMELL and no motion detection

I installed the Video Doorbell 2nd Generation yesterday. 1. Smelt a very bad buring smell immediatley after installation(yes, I did use the correct screws, I did tighten very securely). Uninstalled and reinstalled. Smell went away after about a minute. Is that normal or should I return for replacement? 2. The device is not detecting motion unless I stand at the door and after a short time it detects I'm standing there. I have gone through all the sttings I could find with no success 3. The bell does work if I push the button and I am able to comunicate if using the device I have been unable to communicate via chat and will return the product if I do not get a satisfactory response to this communication Thanks Russell