Android TV includes the As and this shows up on my U5 in the list of apps. If I look at the available AAS option in the U5 Accessibility options you appear to have only enabled a few of them.
When you do the next update please could you enable the Visibility Enhancements to enable visually impaired U5 owners the option of changing the Settings so they can navigate the U5 home page and menu options.
Gracias