Indoor camera disconnects after 1 minute

So we added an indoor wired camera to my daughters Ring network and she’s trying to monitor her infant daughter in the crib. We went thru the setup process several times and it’s always the same result; camera is offline after a minute. The camera is closer to her Xfinity router (8 feet away) than any of her four outdoor Ring devices and they are all working flawlessly. Before I pack this camera up and send it back to Amazon I’m willing to try fixing what’s wrong, but I’m baffled. Once it worked for about 10 minutes and it kept freezing bc the baby’s mobile was triggering motion. I added a custom zone outside of the mobile device then deleted the default zone. I’d also like to know why the low light imagery is so blurry. Thanks in advance for any/all help and advice.