Hi, @Hgibbons
Welcome to the Roku Community.
Thanks for letting us know about your concern with streaming content on The Roku Channel. We also appreciate the steps you have taken to resolve the issue. It appears that a setting on your network is blocking access to the Roku Channel server.
For this matter, we would recommend trying a mobile hotspot with a good signal if there are alternative providers to see if you notice any difference. In addition, you can reach out to your internet service provider and inquire further about your network's status to see if there are settings that can be configured to gain access to The Roku Channel.
We hope this will be sorted out soon.
Best wishes,
Kash
Takashi O.
Roku Community Moderator