Ring doorbell 2 video at night

When I first install the doorbell 2 I get color video at night with the porch light on. Then it goes away then into night vision. This is the doorbell 2. My ring doorbell 720p works perfectly at night in color. If I do a hard reset on my Db2 the color at night works for 10 r so seconds then goes off back to night vision and will not work again. The porch light is super bright. This is my second camera as I received a replacement because ring said the first camera was bad. Well, this db2 is not any better. Think it's time to get my money back and move on. I've called many times, I was told not enough light or that the db2 does not video in colour at night even with the lights on. The lady seen the video of my camera video at night in color and had no answer. She even said it does not work at night but the video proved it does. Hmm.