Xumo stream box shuts itself off

After a 28% increase in my Comcast bill, I called customer service to see what could be done. I had a very minimal cable package but fast internet. I never had even hooked up the cable box that I got from Comcast since I didn't really need it. What they offered was a pretty good deal including a new stream box from XUMO. I went to my local Xfinity store, took in my old cable box and came home with the new Xumo. I was able to get it set up and configured and add in credentials for the various streaming service I use outside of Comcast. Everything seemed to be working fine. After a few hours I came back to watch TV and noticed that when I turn the TV on after a few seconds the power light on the Xumo went out. Now I can't make it work at all! If I remove the power supply and plug it back in, the box works for a few seconds then the power light begins to flash, then it shuts off. I tried moving it to different outlets, I reset my cable modem just for fun, but the behavior continues. So while it seemed like a promising new piece of technology, it's frustrating that it can't work. After doing some searching on the internet I saw a forum post on the spectrum cable forums. Dozens of people are reporting the same issue, basically the zumo powering off after a certain period of time! I also spoke with Xfinity support they went through some basic troubleshooting but couldn't resolve the issue. I have an appointment scheduled for a Comcast tech to come to my home and troubleshoot. in meantime I was thinking of just going back to the Xfinity store and getting a replacement stream box. But in reading the spectrum cable forum, people are saying that a replacement Xumo box did exactly the same thing! I was also told that this device is new for Xfinity and had only been out about a month according to the tech I spoke with on the phone. After all of this my question is are other people having the same issue and have you been able to resolve it?