Be aware that the issue you ran into with Fox News is one you could encounter with other apps. When you have an app that needs authentication against a carrier (cable, satellite, streaming service) there will occasionally need to be a re-authentication. This is because you're only entitled to use the app is you have a corresponding service. There are many services that are this way; the Roku app is a supplement to the service. Some require re-authentication as often as once a month.
Sometimes, things go wrong, and you have to re-authenticate more than expected. This could be for legit reasons, such as the account used at multiple locations (account sharing, which is often a violation of terms of service).
Sometimes its a screw-up. It could be the service making the error, or it could be something wrong with the app itself.
If it's the latter, the best option is to remove the app, reboot the Roku, then reinstall the app.
Your solution to find something else that suits your viewing habits is something many people fail to pursue. There's a lot of content out there, and for free, if people will only take the time to look for it. You found what you were after.
Just keep in mind the steps listed here in case you run into something similar on an app for which you can't easily find an alternative.
DBDukes
Roku Community Streaming Expert
Note: I am not a Roku employee.
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