I received a reply from Fox News. Replied answering these solutions did not fix the problem. Using one account nor logging off, rebooting and relogging in did not work. Recommend everyone continue emailing Fox regarding this problem. Hopefully, these will drive the solution.
FOX's email: "Thank you for your response and apologies for any issues streaming our content via Roku.
The Roku app currently doesn't have an option to remember your whole login, just the username.
We wanted to let you know that we definitely hear you and put this as a feature update request which we hope to have live very soon!
These changes will address the frustrations you've encountered and enhance the user experience moving forward.
Why does Roku continually lose my auto sign in to fox news, on all devices?
Some apps** require re-authentication **if they **detect multiple logins **from the same account from different locations. Essentially, a way to** reduce account sharing. **In that case, it would be** intentional behavior.**
Note that a Roku device _tied to the same Roku account_ at a different location may be considered "account sharing" if the app uses** Roku's Single Sign On process.**
We've passed the concern to our internal team regarding "Spectrum" for the meantime; please see the instructions below.
In order** to change TV service providers **go to the **Live TV settings and select ‘Log Out’.** Next, select your new **TV service provider and log in using your new username and password.**
**_*Rebooted, and reauthorized via your provider, then restarted the Roku unit to save the new authorization data to system memory._**
We'll stay posted for your response!
Fox News Digital"