I had forgotten that some things can be selected. "What to Watch" is enabled on one of my Roku's but not the other. The Roku support person also didn't remember that "What to Watch" can be selected or not.
Personally, I find "What to Watch" to be worse than useless. There is so much listed, in so many nonsensical headings, that it's more trouble to go through than just looking at the listings on the channels you normally watch.
One problem that was covered in my conversation is that switching to the new feature was not supposed to remove anything, so they still have to look at that.
I have now looked at the new "Save List". It contains literally hundreds of programs that Roku has "Pre-Selected" for me, including programs in languages I don't understand. And one can only hope that programs that you did select in the past will be found in the future. We will have to wait and see what happens. One can only hope that you will be notified if something does show up that matches, so you don't have to do a lengthy search through "What to Watch" every day.