Why do some of CUE touch screen icons, when touched do npt respond?

What is your question?

I cant change the vent setting. The air blows out of dash vents only. Id love to have heat on my feet.

What makes this problem better or worse?

It is stuck in one setting. Air blows from d dash vents only.

How long has your 2015 Cadillac XTS had this problem?

6 months.