I have a 3600x Roku Stick. The recent full screen ad for the 4k Roku Player takes over my Roku app and renders my remote controls useless. It has happened only on Sunday for the last 3 weeks so I thought it was one faulty push notification. It happened again yesterday. I communicated with Roku Support twitter, they said update my system, it is updated, then they said they would put in a support ticket. They clearly didn't. My only solution is to unplug my Roku every time. Here is a video of the problem. https://drive.google.com/file/d/1XWLUMstOQ549si_RpcE3kIQBFdh_odQG/view?usp=sharing
I’m into videotapes and old electronics stuff, including extenders, converters and analog 4:3 TV sets (which are obsolete these days), and Miss Bianca is my favorite character in Disney’s The Rescuers (1977) and its sequel, The Rescuers Down Under (1990). I am not a Roku employee, only a user like you. ~ Jordan
As others have suggested, unplug your Roku for 30 seconds, reboot, then go to Settings> Home screen, and Hide all of those options. Since I did that several months ago I have only had one ad take over my screen and have to unplug. Good luck!