Ring door bell Elite Video quality issue

Initially i have installed the ring video door bell Elite and with in a month it was stopped working. Under warranty the Ring video door bell elite was replaced.The replaced Ring video door bell Elit was working finr for a month. Now suddenly the video quality looks very bad at night ( after sun set)Morning at sunrise the whole screen goes pink. Only after power off and power On the video will be back. During morning no issue in video quality.I have spoken with the Ring support and they told me to do reset by pressing the button. But no improvement.I have changed the network cable and the power injector also. But no improvement.Daily morning i have to switch Off