Thank you for reporting this. I have same issue. I contacted Courttv (per suggestion from Roku tech support) and received an automated reply from Courttv that they "will be in touch." Am awaiting further communication from them.
I'm thinking this issue might go into next week if indeed it's a Courttv issue (not Roku). I emailed and got their automated reply on Friday; we're now in a weekend and Monday is a holiday. It might help if some others went directly to Courttv.com and looked for "contact" at the bottom of their page. Might put more pressure on them. Who knows. If/when I hear from them or their channel suddenly starts working, I'll post back.