Google app for Android TV

After last update my android TV's assistant stopped working normally with languages other than English. When I asked "what the weather is", instead of showing the weather, the assistant suggests watching a video from YouTube over the past year about the weather.(( and e.t.c. I had to roll back to the previous version there everything works as before ok.

Seems to be installed on my new Shield TV, but doesn't appear to actually do anything (doesn't even show in my apps & doesn't start from Google Assistant). Been searching for a web browser I can use on it for hours (first attempt was Firefox, but can't find that in the Google Play apps on the device), assumed this would be a web browser, but doesn't seem to open as a stand alone app, so giving a minimal rating until I see that the app actually has some use...

After the last update, Google Assistant completely stopped working on both of my TVs and permanently says Google Assistant is unavailable. TVs are Skyworth 55SUC9300 and Skyworth 65SUC9300 Please can this be rectified as these are the newest models available so it makes no sense that an update breaks functionality.