I am away from my home ROKU and want to watch Brit Box and Acorn but no way to sign in. It keeps asking me to set up a new service.
Is the new Roku device linked to the same Roku account as your home Roku device or are you using someone else's? If you purchase a subscription through Roku you can generally only use that subscription on a Roku device linked to the same Roku account. That's one reason why people here would generally recommend bypassing Roku (or any third party) and subscribe directly with the provider.