You might try changing the physical address in the CEC settings to 1, 2 or 4 and see if that makes a difference. You will need to at least reboot the Vero after changing this setting for it to take effect. It may be possible that you may need to go one step further by unplugging the power from the wall for the TV, Vero, and your cable box for a few minutes to completely reset the CEC network.
On an unrelated note you may be well served by turning refresh rate switching to on/off and color range to limited.
I had the same problem before. To get vero to respond again I had to turn on and off my digital tuner and then vero worked until I turned off the tv again. I had this problem for a couple of weeks and I think it vent away after a sw update.
I suspect it has something to do with the premium brands maybe doing something proprietary “improvements” under the hood that are pushing the limits of the CEC standard Wich very outdated as it is. And that is causing compatibility issues.