Hi @ccerghed,
From the Roku Community, welcome!
Thanks for reaching out. Even if you don't have a Roku device, you can still easily access your Roku account or any subscription you have via the website. It's good to know that the Roku Mobile app only allows you to stream free content that is isolated within each channel. You are spot on about this.
Let us know if there's anything else we can do to further assist you and hoping this clears everything.
Regards,
Rey
ERey.
Roku Community Moderator