The test users is a great workaround... is there a limit to how many we can add? I'll toy around this idea, thanks!
As for the free and paid content, I don't have much to offer, I only have one continuous live broadcast.
Another option would be to leave the channel free to install, but lock down the content with an in-channel subscription purchase. That would also allow you to offer some free content without requiring user's to subscribe, so they can get a taste of what's available, and would keep your existing install base without any extra hassle for the end user.
Should I cancel it, re-submit as a free channel, and add an in-app subscription package from my 'Manage in-app products' option, in the website admin area?