The Channel did seem to have some issues loading up the LiveTV. Initially it crashed back to Home Screen of the Roku after attempting to "Communicate with Servers" (spinning circle). After reloading, it did not play Live, but did play the content under the "Series" category. After exiting "Series", it then was able to play "LiveTV / Watch Live)" immediately.
Subsequent attempts at playing "LiveTV" took a little bit of loading time (black screen) but did start to play. (currently Stephanie Miller).
I would conclude that either the LiveTV stream was/is encountering some issues or that the issue has now been resolved. Has not crashed the last few times I tested it.
If you ever have problems with the Channel/app itself, you can also watch the LiveTV streams at https://freespeech.org/watch-live/ and then cast or mirror to your Roku, or HDMI cable directly to your TV.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660x, Premiere+ 3921, Express 4k+ 3941