Welcome, and thank you for posting here in the Roku Community, @leftysjewel!
We appreciate you letting us know about the issues you've encountered when unable to access Live TV in Guest mode. We'd be happy to help you find the best resolution.
In this case, have you tried connecting to an alternative network connection to see if this makes any difference? Perhaps you can try mobile hotspot/data.
Please keep us posted and we'll go from there.
Best regards,
Carly
Carly Y.
Roku Community Moderator