The old school DirecTV remotes are cheap on Amazon...
For #3, try using Google's Android TV Remote Control app on your Android phone or tablet.
https://play.google.com/store/apps/details?id=com.google.android.tv.remote&hl=en_US&gl=US
First night of trying to watch live tv and a recorded show was terrible. Buffered like crazy and live tv was pixelated. During the day, it was perfect. Soon as prime time hit so did the quality.
I don’t think they ever fixed this same issue since directv now, works good until the network becomes congested. Funny how YouTube tv and others don’t have this issue. Defiantly couldn’t blame it on my internet since I have att fiber gigabit. I’m wondering if i should just go back to direct tv and screw this streaming box.