Does look like the channel/app is having issues. (error message box - temp. unavailable). I haven't used this app so do not know its normal behavior.
You can watch livestreams and their other videos from its website https://censored.tv/ and cast/mirror it through your Roku. (or use an HDMI cable from laptop to TV).
They still have a presence on Rumble as well but pretty sparingly. (looks like streaming from their website is best bet until they fix their channel/app).
If you scroll to the bottom/footer of their website, there is a Help/Support link that you can use to contact them and let them know there is an issue. (the developer is responsible for maintenance and fixes to their channels/apps on Roku).
