@Ike4
Any subscription (to include free trials) through Roku must be utilized through a Roku device.
If the subscription (to include free trials) is through the Roku Channel, you can use the Roku Channel to watch on any device that supports the Roku Channel.
A subscription through Roku cannot be used on a stand-alone app on a non-Roku device.
DBDukes
Roku Community Streaming Expert
Note: I am not a Roku employee.
If this post solves your problem please help others find this answer and click "Accept as Solution."