I have a bunch of stuff in My Feed that I never followed. Maybe 40 things. Yes, I tried following and then unfollowing both within My Feed and within Search to see if that would help. They just stay there permanently.
Additionally, a bunch of stuff I attempted to Follow don't actually show up in My Feed.
Due to these issues, My Feed is pretty much totally unusable. It's kind of a joke.
Yes, I restarted the Roku Stick. The only thing I haven't done is a factory reset.
I have more than one Roku Stick, if that matters, but same problem.