@dherbert53, have you tried contacting TCM or the provider that gives you access to Watch TCM as mentioned above? Roku is not the provider, by the way. Even if you could get technical support from Roku, they wouldn't be able to help you.
What worked for me was getting a new ROKU model. I had an old one that just wouldn't work with TCM or MAX. The new model (stick) works just fine.
Hope this helps.
Worked like a charm! Thank you!