Hi @Hekate,
Thanks for posting to the Roku Community!
We're more than happy to assist you with setting up your Roku Streaming Stick 4K. Check out this link here for complete, guided steps to set up your Roku Streaming Stick 4K.
Please let us know if there is anything else we can do to help you.
Best regards,
Eunice
Eunice L.
Roku Community Moderator