Welcome, @Slomo27!
We're grateful to have you here in the Roku Community.
Thanks for reaching out. We'd be more than happy to help you stream your OTA Live TV channels.
If the option available for setting up your Live TV channels is "Rescan for channels," it means that you've successfully set up your antenna input. To help you access this, kindly try to look for the Live TV Guide (white background) app icon on your Home screen instead of the Live TV on The Roku Channel (purple background) to see if this helps.
Let us know how it goes and we'll go from there.
Best regards,
Carly
Carly Y.
Roku Community Moderator