We are receiving code 012 1206 403 for live unavailable with abc - anyone else? What does this mean?
Is this the issue you are having?
https://community.roku.com/t5/Channel-Issues-Questions/Code-012-1206-403/td-p/588720
Watching ABC Live requires a TV provider, ABC News Live does not.
Whenever you see a lock, means locked content requiring some sort of subscription or TV provider needed in order to access.
Expanding on the reply from @AvsGunnar :
ABC only makes this available for streaming to those who can receive their ABC channel via a subscription to a service that carries it (cable, satellite, other streaming service). This assures them that your local ABC affiliate is getting paid by the TV Provider service, and that ABC gets their cut from the local channel.
If you have such a subscription, while in the ABC Roku app try this: