Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
The first suggestion would be to do a hard reset and start over. And I'm assuming you're connected to the Internet with the Roku. Initial setup requires an Internet connection. It can be used without a connection once set up, but you have to have it connected to accomplish that.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.