Where are the puzzle rush to learn???

Sorry, I didn't write the answer here. She told me that she can see it in her staff acount and so she was thinking that it is available for everyone. But it isn't. And she thinks that it will coming back soon...

We will see.

Here is a little work around if you want unlimited puzzles, simply go to a players stats and see full stats of their puzzles, you can then replay as many as you like.

Just click on "Play". Puzzle Rush is there. It is not under the "Learn".

This is not specifically to learn the puzzle rush. You should solve the puzzle and improve yourself. You play puzzle rush without timing, 5 minutes and 3 minutes. Solving chess puzzles is good for mental exercise and learning new moves.