Be careful of Android boxes for the TV that are only running plain Android or AOSP. Get one with AndroidTV or GoogleTV, blessed by Google. I personaly use an Onn Box 4K from Walmart.
They changed where it boots to. You don't have any image or app menu by default anymore. They changed Terms and Conditions so many times, reenabling tracking defaults as they see fit.
Seeing how they support their own OS, I'm not surprised they broke support on Android-TV.