Sorry, I think it will work now.
It's still not working, Liz. I can't add it to the Playlist and it still says that comments are turned off!
Could anyone offer technical assistance?
As I understood the new 'rules' Google came up with to keep the US Authorities happy, if you set your default as "Made for Children" which, given what Liz does for a living, I imagine she needed to do, then comments are turned off and you can't add videos to playlists by default and I don't think you are able to alter that. I suspect the reason is to try and minimise cyber bullying of young children.
I think the solution may be to set up a separate channel for your adult videos.