Xfinity Flex times out

I was having this problem too... But now its like the user interface for the flex box has just completely crapped out: so, now, randomly, mid-program it will just go to a black screen. The good news is that, most of the time, voice control still works allowing access to 3rd party apps. But the flex interface, browsing, searching across platforms, etc, is a no go.

Yes, I am having that same experience.
I originally would reset my cable modem and wireless router, and wait for the Flex service to come back. It works, but it does not fix the root problem. It will happen to me the following day or so.

I also found that if you scroll to the end of the apps, there are some options: account, settings, help.
Going into help, there is an option for resetting the Flex box. That works too.

But I am looking for is a fix to the root cause of the Flex service crapping out.

I was hoping an XFinity support person was monitoring these forums to provide an answer for a fix.

This happened to me for months. I tried all the hacks. I finally got them to swap out for a new flex box, 4 days ago, and it just freaking happened again! I’ve tried plugging into different outlets, changed the HDMI cable, resetting the box and the modem...nothing works!