Unable to download discovery plus app. Also always had issues with chromecast with my Samsung s10 and Samsung TV. My TV is 4 years old. In February 2020 just before warranty expired the motherboard, wifi module and LEDs were replaced. I always have issues with chromecast from my phone since new. VERY cumbersome to mirror phone to TV. My wife I phone connects more easily than my S10. But still cumbersome. I cannot watch discovery plus on TV. I cannot stream or mirror phone to TV. I've read many articles about this issue. I rebooted TV. I disconnected power. I reset hub. I factory reset. I uninstalled chromecast from my phone and reinstalled. I made sure software is updated on TV. I cannot download chromecast app on TV. It seems built in. I cannot seem to find model number without removing TV from wall. Beyond frustrated is where I'm at. I hope someone on this site can help. Losing faith in Samsung. It shouldn't be hard to do simple app downloads and certainly a Samsung phone and TV should be compatible. Like I said wife's I phone sees and connects to TV easier than my s10. But most often won't play video or screen mirror either.