I loaded the last release on my ATV before a morning group ride. No matter how much I tried I was unable to scroll up to a power up or select it. The remote worked fine on the lower graphic menus
Just press the Play/Pause button on the remote to activate Power Ups. Much easier than trying to ‘scroll’ up to the icon.
The Companion App makes Zwift on ATV immeasurably more user-friendly. I can’t imagine Zwifting without it.