I have a multiple roku ultra LT devices and all are on same software version. The one I use the most just started not letting me select an app. The remote will let you select any menu item, just not apps. I have restarted, disconnected everything and have identified the problem. If I reboot with No Ethernet cable and no WiFi connected it will let me select apps. If I connect either WiFi or Ethernet it stops letting me select app. This only happens on this unit. I am on software version 14.0. I have also tried factory reset and still works as stated above.
The same started happening in Wisconsin with all our ROKU ultra devices. Can select menu items and ROKU ads, but none of the installed apps. This includes Ultra 4670R and Ultra 4800R units. Has ROKU been hacked?