Again, thank you
If you are referring to Tubi's "My List", I didn't see that WCVB 5 is available through searching the device or online. However, you can view WCVB ch 5 through Tubi with this link (https://tubitv.com/live/610463/very-boston-wcvb).
Why none of the Search terms work to bring it directly up through Tubi's online or the Tubi Channel search is puzzling.
Maybe try going to this link, signing into Tubi, saving it to "My List" online and then use the Roku's Tubi Channel and see if is saved.
(https://help.tubitv.com/hc/en-us/articles/4410093930011-What-is-My-List-and-where-can-I-find-it-)
------
If you are not referring to Tubi, perhaps explain which channel/app you are watching WCVB on and maybe a better answer can be provided.
Edit: It seems that the Tubi LiveTV developed for Roku may not carry this LiveTV channel, but the online Tubi LiveTV does. (although can't be found by searching Tubi's search engine). I certainly don't see it.