Glad things are working for you. Here my Watch TCM channel has been backfiring to home screen ever since the 9/1 so-called upgrade of TCM channel (very garish; gives me migraines). Have tried all suggestions; all have failed. So I wait, not exactly patiently, for TCM/Roku to fix the problem, or for some other brilliant suggestion from someone in the Roku community.
For other long-suffering streamers, here's a very old-fashioned work-around suggestion, while this continues. Before there was streaming, I used to check the TCM schedule for upcoming films, and then, using the guide on your TV to search ahead, I would set-up to record the ones I especially wanted to see on my DVR, if you have DVR service (and now the storage capacity on most DVR set-ups is much greater). As you might guess, that's exactly what I'm doing right now. Who would want to miss tonight's showing of The Graduate, followed by a Mike Nichols profile, followed by Gilda Radner?
Here is the link to TCM scheduling in case you need it:
https://www.tcm.com/schedule?icid=mainnav15-daily-schedule
Good luck to us all! DaveyJ