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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Do you not like puzzle-style katas in general or was it something specifically about this kata?
This kata is already retired, there's nothing else that can be done, closing the issue.
I wouldn't flag a misspelling like that as an issue, or create one per typo, but anyways, fixed.
The Kata is themed Regex validate PIN code so I believe regex is the go word here.